ἐπέθεντο ἡμῖν οὐκ ἀδικούμενοι
From LSJ
Δεῖ τοὺς μὲν εἶναι δυστυχεῖς, τοὺς δ' εὐτυχεῖς → Aliis necesse est bene sit, aliis sit male → Die einen trifft das Unglück, andere das Glück
English > Greek (Woodhouse Quotes Reversed)
they attacked us gratuitously unprovoked, they attacked us unprovoked