أَعُوْذُ بِاللَّهِ مِنَ الشَّيْطَانِ الرَّجِيْمِ

A'oodhu billaahi minash-Shaytaanir-rajeem

I seek refuge in Allah from Satan the outcast. Uthman bin Abu al-'As reported that he came to Allah's Messenger (ﷺ) and said: Allah's Messenger (ﷺ), the Satan intervenes between me and my prayer and my reciting of the Qur'an and he confounds me. Thereupon Allah's Messenger (ﷺ) said:, That is (the doing of a) Satan (devil) who is known as Khinzab, and when you perceive its effect, seek refuge with Allah from it and spit three times to your left. Uthman (RA) said: I did that and Allah dispelled that from me.

Reference: Muslim: 2203