Use a tank companion and dps the glittering fury from the back. The big laser doesn't hurt your companion, only the droid's ordinary attacks can harm him/her. If you're a tank, switch to dps stance.
Your tank companion does not need to be geared. My sentinel used Lord Scourge in just 1 tionese piece, 2 blue level 50 pieces and the rest were level 47 greens was able to tank it without healing. Use your heroic moment for some minor healing if you need it.
People are saying it is hard. This is true only if you're trying to tank it or time a last minute dash or dodge out of the way. If you don't have the droid's attention, you'll be fine