ما هي الآية التي بكى منها إبليس عند نزولها على الرسول صلى الله عليه وسلم، وما أحب آية إلى ابن مسعود؟

The verse that made Satan cry when it was revealed is Al-Fatiha, and he cries during prostrations.

As for the verse that was most beloved to Abdullah ibn Masoud, he mentioned that Surahs Al-Isra, Al-Kahf, Maryam, Taha, and Al-Anbiya are among the "first and ancient ones" and from his "earliest possessions." His intention was that these were among the first surahs he learned from the Quran, and that they possess virtue due to the stories and accounts of prophets and nations contained within them.