Answered by Sayyidi Habib Umar bin Hafiz (may Allah protect him and benefit us by him)
What can be recited to remove scary thoughts?
When you experience these thoughts, recite the following Surahs: Quraysh, al-Ikhlas, al-Falaq and al-Nas. If this continues, recite verse 154 of Surat Al `Imran (3:154).