His punches were accompanied by the sounds of explosions and volcanic eruptions, so what he was saying was defined out. But she could hear him clearly.
Fire and ash filled the spherical world as he pummeled her. He kept beating her back again and again, but these were just superficial wounds because he was relying mostly on his physical strength, not his domain or the power of his mind.
He was only harming her exterior, not the foundation of her existence. He was even taking great care not to kill her too soon.
This is clearly a bad thing to do in a fight with another god. At this rate, he won't be able to kill her soon.
But he didn't want to kill her early. He wanted to beat her up. He wanted her to feel a little regret before she died.
He said to her, "You had the chance. You had the opportunity. You had the whole world to yourself and could have grown your god fire until it became as bright as a star."