The Bible is ALWAYS the best thing to use when talking to any person regardless of where they live in the world!
Here is the passage in question from Acts 17:
18 Then certain philosophers of the Epicureans, and of the Stoicks, encountered him. And some said, What will this babbler say? other some, He seemeth to be a setter forth of strange gods: because he preached unto them Jesus, and the resurrection.
19 And they took him, and brought him unto Areopagus, saying, May we know what this new doctrine, whereof thou speakest, is?
20 For thou bringest certain strange things to our ears: we would know therefore what these things mean.
21 (For all the Athenians and strangers which were there spent their time in nothing else, but either to tell, or to hear some new thing.)
22 Then Paul stood in the midst of Mars' hill, and said, Ye men of Athens, I perceive that in all things ye are too superstitious.
23 For as I passed by, and beheld your devotions, I found an altar with this inscription, To The Unknown God. Whom therefore ye ignorantly worship, him declare I unto you.
24 God that made the world and all things therein, seeing that he is Lord of heaven and earth, dwelleth not in temples made with hands;
25 Neither is worshipped with men's hands, as though he needed any thing, seeing he giveth to all life, and breath, and all things;
26 And hath made of one blood all nations of men for to dwell on all the face of the earth, and hath determined the times before appointed, and the bounds of their habitation;
27 That they should seek the Lord, if haply they might feel after him, and find him, though he be not far from every one of us:
28 For in him we live, and move, and have our being; as certain also of your own poets have said, For we are also his offspring.
29 Forasmuch then as we are the offspring of God, we ought not to think that the Godhead is like unto gold, or silver, or stone, graven by art and man's device.
30 And the times of this ignorance God winked at; but now commandeth all men every where to repent:
31 Because he hath appointed a day, in the which he will judge the world in righteousness by that man whom he hath ordained; whereof he hath given assurance unto all men, in that he hath raised him from the dead.
32 And when they heard of the resurrection of the dead, some mocked: and others said, We will hear thee again of this matter.
33 So Paul departed from among them.
34 Howbeit certain men clave unto him, and believed: among the which was Dionysius the Areopagite, and a woman named Damaris, and others with them.
Paul quoted the inscription to one of their altars as an opportunity to speak to them of the living God, and then quoted a poet, nothing more. He did not open up the poet's books and reason out of them! Acts 17:2 is the model for this chapter and the model for NT evangelism. It is sad that people take this one occasion in Acts 17, misunderstand the meaning of it, then act like it gives them permission to open up the Koran and reach muslims from their own book! The Bible doesn't say "search the Scriptures" in John 5:39 and then proceed to commend man searching outside the Scriptures! The Bible says to "Study to shew thyself approved unto God" in 2 Tim 2:15. That does not mean study other books(ie: the Koran). Studying the Koran may result in man being approved to other men, but not unto God! One has to become familiar with the Sword of the Spririt, the Word of God to be able to utilize it correctly! Paul did just that! Nowhere in Scripture does it say we are to go to any heathen books to reach the lost.
It is a demonic lie to get people to stray from the Word of God. The devil knows salvation is only found in the Word of God and nothing else! The Word of God needs no help or any outside literature. For the Word of God is living and powerful!
"For the word of God is quick, and powerful, and sharper than any twoedged sword, piercing even to the dividing asunder of soul and spirit, and of the joints and marrow, and is a discerner of the thoughts and intents of the heart." Heb 4:12