Pacorus sent a body of horse to his aid; but these troops, instead of putting themselves under his command, acted independently, and, in a rash attempt to surprise the Roman camp, were defeated by Ventidius, whereupon they fled hastily into Cilicia, leaving Labienus to his fate.
The self-styled "Imperator," upon this, deserted his men, and sought safety in flight; but his retreat was soon discovered, and he was pursued, captured, and put to death.
The Parthians, meanwhile, alarmed at the turn which affairs had taken, left Antigonus to maintain their interests in Palestine, and concentrated themselves in Northern Syria and Commagene, where they awaited the advance of the Romans.

A strong detachment, under Pharnapates, was appointed to guard the Syrian Gates, or narrow pass over Mount Amanus, leading from Cilicia into Syria.

Here Ventidius gained another victory.

He had sent forward an officer named Pompsedius Silo with some cavalry to endeavor to seize this post, and Pompaedius had found himself compelled to an engagement with Pharnapates, in which he was on the point of suffering defeat, when Ventidius himself, who had probably feared for his subordinate's safety, appeared on the scene, and turned the scale in favor of the Romans.

The detachment under Pharnapates was overpowered, and Pharnapates himself was among the slain.