Passage 7.8.7
ἔργῳ μὲν δὴ Φίλιππός τε αὐτὸς καὶ ἡ Μακεδόνων ἀκμὴ καθῄρητο ὑπὸ Ῥωμαίων---μαχεσάμενος γὰρ Φλαμινίου καὶ Ῥωμαίων ἐναντία Φίλιππος ἐν Κυνὸς καλουμέναις κεφαλαῖς ἐν λόγοις τὸ ἧττον ἠνέγκατο, ἀλλʼ ἅτε δὴ κατὰ δύναμιν ἀγωνισάμενος αὐτὸς οὗτος ὁ Φίλιππος τοσοῦτον ἐκρατήθη τῇ συμβολῇ, ὡς στρατιᾶς τε ἣν ἦγεν ἀποβαλεῖν τὸ πολὺ καὶ ἐκ τῶν πόλεων, ὅσας εἷλεν ἐν τῇ Ἑλλάδι πολέμῳ παραστησάμενος, ἐξήγαγεν ἐξ ἁπασῶν τὰς φρουρὰς κατὰ ὁμολογίαν πρὸς Ῥωμαίους---
Indeed, Philip himself and the flower of Macedonia's power had already been overthrown in battle by the Romans; for Philip fought unsuccessfully against Flamininus and the Romans at the place called Cynoscephalae. Although verbally he minimized the defeat, nevertheless, since Philip himself had fought as strenuously as he was able, he was so decisively beaten in this engagement that he lost most of the army he had led, and was compelled, in accordance with his agreement with the Romans, to withdraw his garrisons from all the cities he had previously captured in his war in Greece.