src/map/skill.c then find this line
case PR_SANCTUARY: hp = (skill_lv>6)?777:skill_lv*100; break;
Change to case PR_SANCTUARY: if( ( (TBL_MOB*)target)->class_ == MOBID_EMPERIUM ) hp = (skill_lv>6)?20000:skill_lv*1; else hp = (skill_lv>6)?777:skill_lv*100; break;
Then Recompile your server done