νομίζοντες πρὸς ἐκείνων εἶναι τὴν ἐν ὀλίγῳ ναυμαχίαν
From LSJ
Ἴσος ἴσθι πᾶσι, κἂν ὑπερέχῃς τῷ βίῳ → Quamvis superior sorte, da te aequum omnibus → Sei allen gleich, auch wenn du reicher bist
English > Greek (Woodhouse Quotes Reversed)
thinking that a battle at sea in a small space was in their the enemy's favour