I cant seem to finish the ice elves quest with the two orc warriors. I have killed two of the elf priestesses or whatever they are, but I can't get to the third without getting myself or my two orc companions killed. I'm level 22/gladiator. What do??

I do it the same way as you: I kill the first two priestesses and also the two dragons on the way to the last priestess. Then I get the orcs and try to return them alive. Quicksave every few fights and reload if one of the orcs dies. This is the best advice I can give you.