sed in itinere a latronibus Syris male accepto frequenter exercitu multa perpessus est
Translation :
But frequently on the march his army met with a hostile reception from the brigands of Syria,
Edition :
Historia Augusta, Volume III: The Two Valerians. The Two Gallieni. The Thirty Pretenders. The Deified Claudius. The Deified Aurelian. Tacitus. Probus. Firmus, Saturninus, Proculus and Bonosus. Carus, Carinus and Numerian. Translated by David Magie. Loeb Classical Library 263. Cambridge, MA: Harvard University Press, 1932.