{Say: "He is Allah, the One"} and Al-Mu'awwidhatān (Surat al-Falaq and Surat an-Nās) thrice in the evening and the morning, they will grant you protection from everything

عَن عبدِ اللهِ بن خُبَيب رضي الله عنه أنه قال: خَرَجْنَا فِي لَيْلَةٍ مَطِيرَةٍ وَظُلْمَةٍ شَدِيدَةٍ، نَطْلُبُ رَسُولَ اللهِ صَلَّى اللهُ عَلَيْهِ وَسَلَّمَ؛ يُصَلِّي لَنَا، قَالَ: فَأَدْرَكْتُهُ، فَقَالَ: «قُلْ»، فَلَمْ أَقُلْ شَيْئًا، ثُمَّ قَالَ: «قُلْ»، فَلَمْ أَقُلْ شَيْئًا، قَالَ: «قُلْ»، فَقُلْتُ: مَا أَقُولُ؟ قَالَ: «{قُلْ هُوَ اللهُ أَحَدٌ} وَالْمُعَوِّذَتَيْنِ حِينَ تُمْسِي وَتُصْبِحُ ثَلَاثَ مَرَّاتٍ، تَكْفِيكَ مِنْ كُلِّ شَيْءٍ».

‘Abdullah ibn Khubayb (may Allah be pleased with him) reported: We went out on a rainy and extremely dark night looking for the Messenger of Allah (may Allah's peace and blessings be upon him) to lead us in prayer. He said: I caught up with him, and he said: "Say," but I did not say anything. Then, he said: "Say," and again, I said nothing. He said: "Say." I replied: What should I say? He said: "{Say: "He is Allah, the One"} and Al-Mu'awwidhatān (Surat al-Falaq and Surat an-Nās) thrice in the evening and the morning, they will grant you protection from everything."

Source · Narrated by Abu Dāwūd, At-Tirmidhi, and An-Nasā’i

From the Hadith Encyclopedia (hadeethenc.com).