Pray for the Lord to have mercy on those sinners.
Psalm 109
David complains to God of his slanderous enemies
To the chief Musician, A Psalm of David.
1 Hold not thy peace, O God of my praise; 2 For the mouth of the wicked and the mouth of the deceitful are opened against me: they have spoken against me with a lying tongue. 3 They compassed me about also with words of hatred; and fought against me without a cause. 4 For my love they are my adversaries: but I give myself unto prayer. 5 And they have rewarded me evil for good, and hatred for my love. 6 Set thou a wicked man over him: and let Satan stand at his right hand. 7 When he shall be judged, let him be condemned: and let his prayer become sin. 8 Let his days be few; and let another take his office. 9 Let his children be fatherless, and his wife a widow. 10 Let his children be continually vagabonds, and beg: let them seek their bread also out of their desolate places. 11 Let the extortioner catch all that he hath; and let the strangers spoil his labour. 12 Let there be none to extend mercy unto him: neither let there be any to favour his fatherless children. 13 Let his posterity be cut off; and in the generation following let their name be blotted out. 14 Let the iniquity of his fathers be remembered with the Lord; and let not the sin of his mother be blotted out. 15 Let them be before the Lord continually, that he may cut off the memory of them from the earth. 16 Because that he remembered not to shew mercy, but persecuted the poor and needy man, that he might even slay the broken in heart. 17 As he loved cursing, so let it come unto him: as he delighted not in blessing, so let it be far from him. 18 As he clothed himself with cursing like as with his garment, so let it come into his bowels like water, and like oil into his bones. 19 Let it be unto him as the garment which covereth him, and for a girdle wherewith he is girded continually. 20 Let this be the reward of mine adversaries from the Lord, and of them that speak evil against my soul.
Turning to his own misery, he prays for help and promises thankfulness
21 But do thou for me, O GOD the Lord, for thy name's sake: because thy mercy is good, deliver thou me. 22 For I am poor and needy, and my heart is wounded within me. 23 I am gone like the shadow when it declineth: I am tossed up and down as the locust. 24 My knees are weak through fasting; and my flesh faileth of fatness. 25 I became also a reproach unto them: when they looked upon me they shaked their heads. 26 Help me, O Lord my God: O save me according to thy mercy: 27 That they may know that this is thy hand; that thou, Lord, hast done it. 28 Let them curse, but bless thou: when they arise, let them be ashamed; but let thy servant rejoice. 29 Let mine adversaries be clothed with shame, and let them cover themselves with their own confusion, as with a mantle. 30 I will greatly praise the Lord with my mouth; yea, I will praise him among the multitude. 31 For he shall stand at the right hand of the poor, to save him from those that condemn his soul.
Psalms 109:1-31 (KJV)
Hope this helps.
Look also at Psalms 83
"2 For, lo, thine enemies make a tumult: and they that hate thee have lifted up the head. 3 They have taken crafty counsel against thy people, and consulted against thy hidden ones.
Psalms 83:2-3 (KJV)"
"Psalm 83
The conspiracies of God's enemies
A Song or Psalm of Asaph.
1 Keep not thou silence, O God: hold not thy peace, and be not still, O God. 2 For, lo, thine enemies make a tumult: and they that hate thee have lifted up the head. 3 They have taken crafty counsel against thy people, and consulted against thy hidden ones. 4 They have said, Come, and let us cut them off from being a nation; that the name of Israel may be no more in remembrance. 5 For they have consulted together with one consent: they are confederate against thee: 6 The tabernacles of Edom, and the Ishmaelites; of Moab, and the Hagarenes; 7 Gebal, and Ammon, and Amalek; the Philistines with the inhabitants of Tyre; 8 Assur also is joined with them: they have holpen the children of Lot. Selah.
A prayer for protection against those who oppress the church
9 Do unto them as unto the Midianites; as to Sisera, as to Jabin, at the brook of Kison: 10 Which perished at Endor: they became as dung for the earth. 11 Make their nobles like Oreb, and like Zeeb: yea, all their princes as Zebah, and as Zalmunna: 12 Who said, Let us take to ourselves the houses of God in possession. 13 O my God, make them like a wheel; as the stubble before the wind. 14 As the fire burneth a wood, and as the flame setteth the mountains on fire; 15 So persecute them with thy tempest, and make them afraid with thy storm. 16 Fill their faces with shame; that they may seek thy name, O Lord. 17 Let them be confounded and troubled for ever; yea, let them be put to shame, and perish: 18 That men may know that thou, whose name alone is JEHOVAH, art the most high over all the earth.
Psalms 83:1-18 (KJV)"
When they try to hurt you, take comfort that the Lord is with you. And Pray to him in those times, and praise him for all the good he has given you and done for you!
God bless.