The two ships and their TIE/LN starfighters destroyed most of the convoy, but the X-wings that Termagant destroyed were actually Imperials disguised as Rogue Squadron. Kirtan Loor had sent the false Rogue Squadron to destroy the convoy on his own initiative, but Ysanne Isard leaked the convoy's route to Zsinj.
By the time Rogue Squadron arrived, Iron Fist had left the area, so the squadron attacked the Strike Cruiser. The Rogues destroyed some of the Imperial starfighters, and their proton torpedoes blew the cruiser completely in half. Termagant's surviving TIEs were captured by New Republic forces.