قُلْ أَعُوذُ بِرَبِّ الْفَلَقِ • قُلْ أَعُوذُ بِرَبِّ النَّاسِ
Transliteration
Qul a'udhu birabbil-falaq. Qul a'udhu birabbin-nas
English meaning
Surahs Al-Falaq and An-Nas are the greatest protection from whisperings.
When is it recited?
Morning, evening, before sleep.
Its virtue
These two surahs protect from the evil of magicians and devils.
Source
Surahs Al-Falaq and An-Nas