concentrate

Uthmaan ibn Abi’l-Aas (radi Allahu anhu) came to the Prophet (sal Allahu alaihi wa sallam) and said: “The Shaytaan comes between me and my prayer and recitation of Quran, and he is confusing me.” The Messenger of Allah (sal Allahu alaihi wa sallam) said: “That is a devil called Khinzab. If you notice that, then seek refuge with Allah from him, and spit drily to your left three times.” Uthmaan ibn Abi’l-Aas (radi Allahu anhu) said: “I did that, and Allah took him away from me.” [Muslim]