Yeah, and if you bother to read our replies, we mention that they are worth very little.
However I figured out a solution.
- Summon Zenith, let him attack the double bladed sith from distance, force lift one of the red saber sith, and quicly force stun the other sith. Throw shield on Zenith and join Zenith in attacking the sith with the double bladed saber until he is dead. By then you and Zenith should have about 10% health left each, and just run out of the room to avoid death.
Then summon him again, heal and repeat.