Post here if you've earned the "Proof of Omega", and interesting stories about fighting Omega Weapon if you have any.
I came very close to defeat near the end of the battle - Quistis' and Zell's Heroes had worn off and Omega Weapon let loose with his devastating Terra Break attack, killing them both. Luckily, I had everyone draw 100 Full-Life before I boarded Lunatic Pandora, so Squall was able to revive Quistis to full health, who in turn used the Revive ability to bring back Zell. A triple-dose of Aura and a few limit breaks later, Omega Weapon bit the dust.