أَعُوذُ بِاللَّهِ السَّمِيعِ الْعَلِيمِ مِنَ الشَّيْطَانِ الرَّجِيمِ مِنْ هَمْزِهِ وَنَفْخِهِ وَنَفْثِهِ
Transliteration
A'udhu billahis-sami'il-'alimi minash-shaytanir-rajimi min hamzihi wa nafkhihi wa nafthih
English meaning
I seek refuge in Allah, the All-Hearing, the All-Knowing, from the accursed Satan, from his madness, his arrogance and his poetry.
When is it recited?
Recited before prayer and when experiencing whispers of Satan.
Source
Abu Dawud, Salat 120, 775; Tirmidhi, Salat 180, 242