Due to the boss can take off like a rocket, and the rocket left a trail of fire can kill you instantly. Then, there are six robots all round. You should find the big Boss as soon as possible, and the assistance Tank should pull the foes near to the Boss.
The other players who have rage should pull foes close to Boss either so that AOE damage can hit Boss. Just repeat these stages till the life blood of boss about 20%. The Boss would transmit to the shape of Tank and set fire around him, the vanguard fighter and tank should stand in the space of fire.
Come to swtorcredits.upitems.com for your information when you meet problems in your game, you won't feel upset.