 He then met a Parthian army at the border between Cilicia and Syria, defeating it and killing a large portion of the Parthian soldiers at the Amanus Pass.Ventidius' actions temporarily halted the Parthian advance and restored Roman authority in the East, forcing Pacorus to abandon his conquests and return to Parthia.In the spring of 38 BC, the Parthians resumed their offensive with Pacorus leading an army across the Euphrates.