Hazrat Abdullah ibn Khubaib (RA) reported that one dark and rainy night, they went out in search of Nabi (Sallallaahu ‘alayhi wasallam) and they found him. Rasulullah (Sallallaahu ‘alayhi wasallam) said: “‘قُلْ ’ (Say).”
Hazrat Abdullah ibn Khubaib (RA) asked Nabi (Sallallaahu ‘alayhi wasallam) “What should I say?”
He (Sallallaahu ‘alayhi wasallam) said: “Read Surah Ikhlaas and the Muawwizatayn (Surah al-Falaq and an-Naas) thrice every morning and evening; it will suffice (as a protection) from everything.”
Note: Mullah Ali Qaari (Rahmatullahi ‘alayh) has quoted Allama Tibi (Rahmatullahi ‘alayh) in his Mirqaat (Vol 4 Page 370) that the meaning of this Hadeeth is that these Surahs are sufficient for the protection from all evil, and if the reader does not read any other wazeefa besides this, it would suffice him.
[Extracted from Morning and Evening Duas
By: Shaykh ul Arab wal Ajam Hazrat Maulana Shah Hakeem Muhammad Akhtar Saheb (DB)]
Each Surah has to be read thrice.