Need Hints and Tips battling the shadow jailor Options

[Patrick_hindman]

I need some tips to help me in the battle with the Shadow jailor and the two skeleton lords he has with him.
My party is a 10th barbarian, 9th level vagrant, 11th level auramaster, 7fighter/10cleric Anomen, 10thief/10illusionist Jan jansen, and 11th level mage nalia.

Really once the battle commences i just simply get hammered... i've tried most of the tactics i've used so far but the skeleton lords and jailor have high magic resistance and i dont have the spell lower resistance with me and my summons only really last seconds against them.