Original: Quetzalcoatl became the ruler of the subsequent creation "Sun of Water", and Tezcatlipoca destroyed the third creation "The Sun of Wind" by striking down Quetzalcoatl.
Simplified: Quetzalcoatl became the ruler of the following creation "Sun of Water", and Tezcatlipoca destroyed the third creation "The Sun of Wind" by striking down Quetzalcoatl.