The 18 gods resisted by possessing their Oracles to defend. The gods from their six pantheons combined also descended to their altars with their avatars to help them resist and escort their Oracles to safety.
200 gods from the alliance of gods fought against 50 gods from the Apocalypse pantheon. It looked like the 200 gods were going to win, however, the initiative had already been lost when they invaded the enemy's home ground, failed to neutralize golden light and got themselves surrounded.
The tide of battle changed as soon as Legion-1 arrived with golden light. The gods stopped possessing their Oracles and some avatars even gave up immediately. They stopped helping and quickly returned to the divine realm so that they won't be killed by that weapon and run the risk of losing access to God's Domain forever.