Poseidon's nephew Amphimachus is killed in the battle; Poseidon imbues Idomeneus with godly power. Many fall on both sides. The Trojan seer Polydamas urges Hector to fall back because of a bad omen but is ignored.

Hera seduces Zeus and lulls him to sleep, allowing Poseidon to help the Greeks. The Trojans are driven back onto the plain. Ajax wounds Hector, who is then carried back to Troy. Zeus awakes and is enraged