Honestly the things that I can come up with in terms of "me being alive" are either:
1. Someone guarded me so when I hit Deamon his kill didn't effect me.
2. Zetsu sent the PM to kill Deamon first (I sent my PM in to kill Deamon the second day of the nightphase, if Zetsu decided to kill Deamon first he would have likely been the one to do it) and then nobody else killed that night.