Phoenix, is not that hard, dont mind the corvettes, the destoyers will take care of that for you, just prevent the fighters from causing hull damage to the destroyers, the Arrow is a very good fighter, a lot better that to use a hellcat, sure the T-Bolt have more weapons but that mission needs speed, the more dificult part is the Paktahn bombers that require some time to finish, the Vaktoth are not very dificult to take with a arrow, the last part is those Sorthak closing on the Victory but you have 2 arrows to give suport (not very but they have missiles and will use those) and the rear turrets on those fighters have a lot of blind spots.
This is the mission after the Behemont gets blow up that you are talking about, right?