"Have you not seen that some verses were revealed (to me) tonight the like of which has never been seen before? They are: {Say: I seek refuge with the Lord of the daybreak} [Sūrat al-Falaq: 1] and {Say: I seek refuge with the Lord of mankind.} [Sūrat An-Nās: 1]" [Muslim]
عن عقبة بن عامر -رضي الله عنه-: أن رسول الله ﷺ قال: «ألَمْ تَرَ آيَاتٍ أُنْزِلَتْ هذِهِ اللَّيْلَةَ لَمْ يُرَ مِثْلُهُنَّ قَطُّ؟ (قل أعوذ برب الفلق) و(قل أعوذ برب الناس)». رواه مسلم