As early as Herodotus (4.32) it was doubted that the epic that told the story of the sons of the Seven Against Thebes was by Homer. Instead, it was attributed later to a man named Antimachus from Teios. We have two lines most people agree on, and a handful of uncertain lines.
Fr. 1 (From the Contest of Homer and Hesiod)
“Now, Muses, let us sing in turn of the younger men”
Νῦν αὖθ’ ὁπλοτέρων ἀνδρῶν ἀρχώμεθα, Μοῦσαι
Fr. 4 (From Clement of Alexandria)
“Many evils come to men from gifts”
ἐκ γὰρ δώρων πολλὰ κάκ’ ἀνθρώποισι πέλονται.
Fr. 6 (Dub. from the Contest of Homer and Hesiod)
“So then they divided the meat of bulls and wiped clean
The sweat-covered necks of horses, since they had their fill of war.”
ὣς οἱ μὲν δαίνυντο βοῶν κρέα, καὐχένας ἵππων
ἔκλυον ἱδρώοντας, ἐπεὶ πολέμοιο κορέσθην.
Fr. 7 (Dub. From Scholia to Aristophanes’ Peace)
“They girded themselves for war once they stopped….
And they poured out of the towers as an invincible cry arose.”
θωρήσσοντ’ ἄρ’ ἔπειτα πεπαυμένοι
πύργων δ’ ἐξεχέοντο, βοὴ δ’ ἄσβεστος ὀρώρει.