And it was while Goibniu was making spear-heads for the battle of Magh Tuireadh, a charge was brought against his wife. And it was seen that it was heavy news to him, and that jealousy came on him. And it is what he did, there was a spear-shaft in his hand when he heard the story, Nes its name was; and he sang spells over the spear-shaft, and any one that was struck with that spear afterwards, it would burn him up like fire.

And at last the day of the great battle came, and the Fomor came out of their camp and stood in strong ranks. And there was not a leader or a fighting man of them was without good armour to his skin, and a helmet on his head, a broad spear in his right hand, a heavy sword in his belt, a strong shield on his shoulder. And to attack the army of the Fomor that day was to strike the head against a rock, or to go up fighting against a fire.

And the Men of Dea rose up and left Lugh and his nine comrades keeping him, and they went on to the battle; and Midhir was with them, and Bodb Dearg and Diancecht. And Badb and Macha and the Morrigu called out that they would go along with them.

And it was a hard battle was fought, and for a while it was going against the Tuatha de Danaan; and Nuada of the Silver Hand, their King, and Macha, daughter of Emmass, fell by Balor, King of the Fomor. And Cass-mail fell by Octriallach, and the Dagda got a dreadful wound from a casting spear that was thrown by Ceithlenn, wife of Balor.

But when the battle was going on, Lugh broke away from those that were keeping him, and rushed out to the front of the Men of Dea. And then there was a fierce battle fought, and Lugh was heartening the men of Ireland to fight well, the way they would not be in bonds any longer. For it was better for them, he said, to die protecting their own country than to live under bonds and under tribute any longer. And he sang a song of courage to them, and the hosts gave a great shout as they went into battle, and then they met together, and each of them began to attack the other.

And there was great slaughter, and laying low in graves, and many comely men fell there in the stall of death. Pride and shame were there side by side, and hardness and red anger, and there was red blood on the white skin of young fighting men. And the dashing of spear against shield, and sword against sword, and the shouting of the fighters, and the whistling of casting spears and the rattling of scabbards was like harsh thunder through the battle. And many slipped in the blood that was under their feet, and they fell, striking their heads one against another; and the river carried away bodies of friends and enemies together.

Then Lugh and Balor met in the battle, and Lugh called out reproaches to him; and there was anger on Balor, and he said to the men that were with him: "Lift up my eyelid till I see this chatterer that is talking to me." Then they raised Balor's eyelid, but Lugh made a cast of his red spear at him, that brought the eye out through the back of his head, so that it was towards his own army it fell, and three times nine of the Fomor died when they looked at it. And if Lugh had not put out that eye when he did, the whole of Ireland would have been burned in one flash. And after this, Lugh struck his head off.

And as for Indech, son of De Domnann, he fell and was crushed in the battle, and blood burst from his mouth, and he called out for Leat Glas, his poet, as he lay there, but he was not able to help him. And then the Morrigu came into the battle, and she was heartening the Tuatha de Danaan to fight the battle well; and, as she had promised the Dagda, she took the full of her two hands of Indech's blood, and gave it to the armies that were waiting at the ford of Unius; and it was called the Ford of Destruction from that day.

And after that it was not a battle any more, but a rout, and the Fomor were beaten back to the sea. And Lugh and his comrades were following them, and they came up with Bres, son of Elathan, and no guard with him, and he said: "It is better for you to spare my life than to kill me. And if you spare me now," he said, "the cows of Ireland will never go dry." "I will ask an advice about that from our wise men," said Lugh. So he told Maeltine Mor-Brethach, of the Great Judgments, what Bres was after saying. But Maeltine said: "Do not spare him for that, for he has no power over their offspring, though he has power so long as they are living."

Then Bres said: "If you spare me, the men of Ireland will reap a harvest of corn every quarter." But Maeltine said: "The spring is for ploughing and sowing, and the beginning of summer for the strength of corn, and the beginning of autumn for its ripeness, and the winter for using it."