Surah Falaq and Surah A-Naas are also referred to as “Mu’wadaitain”, which is an Arabic word that refers to the last two surahs of the Qur’aan.
Prophet’s ahadith clearly tell us that these two surahs were revealed to seek protection from various types of evils.
Ibn Al-Qayyim said that “the effectiveness of these surahs is great to repel magic, evil eye, and the rest of the evils and the need for a slave to seek Allah’s protection from these two surahs is greater than his need for self, eating, drinking, and wearing dress” (Al-Fawwaid, 2/426).