buy somewhere some helmet that gives you immunity to mind spells and pull on dragon slippers, bull yourself up with everything, bulls strenght, endurance, cat's grace, aid, bless, haste, ironguts, barksin, death armor, everything, then cast as many spells on yourself as you can, cast every resistance there is, cast spell, pause, cast spell, pause, and so on, quicksave and after 5-10 times you can kill that bastard, always keep near that rod of ressurection and few summoning spells, good luck
