Dua 1
اَعُوْذُ بِاللّٰهِ مِنَ الشَّيْطَانِ الرَّجِيْمِ
I seek refuge in Allah from Satan the accursed.
After saying this supplication, spit to your left three times
Sahih Muslim, no. (2203), Musnad Ahmad, Maymaniyyah edition (4/216).
The background of this hadith is that Uthman bin Abi al-As (RA) mentioned to the Prophet the whispers he had in the prayer, and the Prophet taught him this. Uthman bin Abi al-As (RA) said: Then I acted on it, and Allah removed this from me.