If GOD did allow such a thing to happen to me I would use that time to share why I believe in GOD, Pray silently, stand on GOD's Promises, seek where GOD has a way of escape. If they chose to kill me so be it I know where I will spend eternity and before my last breath I would let them know their fate. Try not to be fearful and be of good courage knowing that my GOD is with me. But Never Ever will I say I would convert, give in or denounce my GOD.
Blessings!!!!!!!