If it helps anyone. I beat him with a lvl 26 sentinel and I did what others have said:
1) Used T7 as companion.
2) Put my back to a wall or boxes.
3) Use resolute to break free from incapacitating hits.
Then:
4) Used rebuke, saber ward, heroic moment, force might & shii-cho form all before making my first hit
5) Hit him with force leap
6) Immediately after I used forced stasis then master strike
7) Then used all my other abilities as they became available to finish him.