Pharnapates sent a strong Parthian detachment to protect the Syrian Gates, which protected a narrow pass over Mount Amanus. Ventidius sent forward one of his officers, Pompaedius Silo, with some cavalry, in order to capture this position. However, Pompaedius found himself compelled to engage with the forces of Pharnapates; the fighting was going in favour of the Parthians until Ventidius, who was concerned about his subordinate's situation, brought his forces into the fight. This move turned the tide of the battle, which resulted in the Parthians being overpowered and defeated. Pharnapates himself was among the slain.