I would like to know how I must react if someone is threating and torturing me because he/she is hating muslims and wants to kill me because of it and is telling me that she/he wants to listen of me that I am not muslim and I am and then become free. What must I do in this situation? And if I dont tell them what they want to hear. Am I dying as a martyr?

If one's life is in danger, saying they're not Muslim is no problem. You can also complain to the authorities. But for the safety of life you can say you're not Muslim (while you are)