All you have to do is change values from file balance.txt(\scripts\server) to:
Enemy_weapondamage = {0,0,0,0,0},
Enemy_spelldamage = {0,0,0,0,0},
and u will no longer take any damage
This mod is also for your mounts and your quest buddies. Yeah, the respawning sucks big-time. Have to clear a previously cleared area again ....