You kindly ask them to leave...
No, serious now: I have NO clue what you mean with the "They are with the aatxes", but here is how it works:
You log in, put up your sh...t, and then use a longbow/wand to aggro a group of aatxes (There also are safespots of which U can make them pop-up without even aggroing Aatxes, wiki it) and u immediatly run back. If you hear/see a nightmare pop up, just keep runnig back, and hide behind one of those restless spirits. The Aatx AI is bugged so they "freeze" the second they can't reach you. Then after a few seconds the nightmare comes running up, watch for his rend, and immediatly after, recast prot spirit. Then just wand him to death/use your farm skills to kill him. After he's dead, put up your sh...t again, prot spirit up, move away froù the spirit and the 1 aatx should start attacking again
Repeat repeat repeat