as a vigilance guardian im finding this fight completely impossible. i've read most of the strats, and not a single one is working.
he evades, and despawns if i try to make it for the stairs to push him off. he usually ignores LoS issues, both force sweep, AND cyclone slash do nothing to the clones, and when i manage to get him at all low i just get one shot by some ability i never saw coming.
IF sweep, and cyclone slash actually did anything to the clones, than this fight would be a piece of cake.
and yes, i did save my companion.