No. But I guess it supposed to be good mode problem when u activated it in field boss ( steal boss). Let me break down this problematic of God mode:
Don't use in some place cos u can got banned (boss crusade, borderlands, arena, Lord of world tower. U have probability to get banned if enemy deal damage more than your max hp)
Don't use in server side battle cos doesn't work (u still die even your hp full and still standing. For example u will be kicked out from steal boss when u taken more damage than your max hp)