Du'a when feeling alarm, fear, anxiety or unrest in sleep

أَعُوذُ بِكَلِمَاتِ اللَّهِ التَّامَّاتِ مِنْ غَضَبِهِ وَعِقَابِهِ وَشَرِّ عِبَادِهِ وَمِنْ هَمَزَاتِ الشَّيَاطِينِ وَأَنْ يَحْضُرُونِ

A'udhu bikalimatillahit-tammati min ghadabihi wa 'iqabihi wa sharri 'ibadihi, wa min hamazatish-shayatini wa an yahdurun.

I seek refuge in the perfect words of Allah from His anger and His punishment, from the evil of His slaves, and from the suggestions of devils and from their presence.

Sunan Abī Dāwūd 3893