So I have a friend who is a Xian atheist, he mocks my beliefs, the demons and Satan says things like "Satan cant do anything because he's not real" "The demons are powerless unreal bafoons" and other things that make me want to cut his throat. Demons giving him nightmares would be fantastic or...

I'm curious, I've pledged myself to Satan and when I die will I be sent into the torment of hell or will I not burn in a lake of fire for eternity because I live and will forever live by Lucifer?