As Lord Phoenix was in the bridge when the fleet came out of hyperspace he saw the entire fleet begin firing on the republic. They were vastly outnumbered and weren't prepared for this massive assault. He looked over the battle through the hologram that was being projected. He ordered most of his fire power to destroy the Republic flagship. While he sent out fighter escorts with bombers to do damage to various Venators and Acclimators.  He kept a large reserve in the hangar that could be called upon when needed. 

As the battle raged on a small fleet of Venators came out of hyperspace and he could sense a Jedi on one of them. The Venators easily destroyed some frigates which had strayed too far from the battlefield. He payed little attention to them so long as they weren't a direct threat to the plan and the battle.