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εἰ μὴ διά

Ἔρως ἀνίκατε μάχαν -> O love, invincible in battle!
Sophocles, Antigone, 781

Greek > English (Woodhouse Phrases Reversed)

εἰ μὴ διά = but for, had it not been for

⇢ Look up "εἰ μὴ διά" on Google | LSJ full text search (Translation based on the reversal of Woodhouse's English to Ancient Greek dictionary)