His brother [Ajax] had vented his warlike rage on flocks of sheep, he whom the skin of the fierce [Nemean] lion had made invulnerable to bronze weapons in battle. He had only one way to Hades and the land of the dead, a way which was hidden by the Skythian bow-case. When the lion [Heracles] burned sacrifices to Komyros [Zeus] his father, he uttered prayers which were heard, as he tossed his companion's [Telamon's] whelp in his arms.
Ajax's invulnerability coming from Heracles, via the Nemean lion's pelt and prayers to Zeus – his bow-case blocked one area of skin from touching the pelt, leaving him vulnerable there
He [Teucer] will never persuade their father [Telamon] that the Lemnian whirlwind of Enyo [Ajax], he who was never turned to flight, the savage bull, could have pierced his innards with the gift from the guest-friend who was his bitterest enemy [Hector], and have leapt in a fatal fall on his sword in self-slaughter.
Ajax killed himself with the sword gifted to him by Hector; Telamon will exile Teucer when he returns home without him (earlier, he/Cassandra called Teucer "killer of his brother ... bastard sprig ... ruin of his family" — the latter also meaning Troy, since his mother was a Trojan)