Allah Ta'ala

Surah Maaidah verse 143

Q: When his Lord manifested His illumination to the mountain, he sent it crashing down to pieces, and Moosa fell unconscious (Quran 7: 143). One of our fundamental beliefs as Sunni Muslims is that there is nothing like Allah,  (لَيْسَ كَمِثْلِهِ شَيْءٌ ). So with that in mind, does the illumination/light of Allah referred to in this ayat actually refer to a veil of illumination/light? Please clarify this.