First thing, have Carth target a grenade (frag, thermal, etc) at the Dark Jedi on the right (or left), have Bastila target a grenade at the other Dark Jedi. Then you target a grenade at the Admiral. Then stack commands to attack the two Dark Jedi. Bastila on one, you and Carth on the other. Once they are down, have Bastila and Carth start taking out the troopers in the room while you hit the Admiral. He only has a pistol so he isnt a real threat. Just make sure you take out the Dark Jedi first. And equip shields, hyper-strength etc BEFORE you enter the room. Also, this is a good example of when to have Force Immunity.