Answer
Write the following verse (in Arabic script) on a pice of paper and tie it around your neck or arm, ?Qul innal fadhla biyadillaahi, yu-uteehi man yashaa-u, wallaahu waasi-un aleem. Yuheedhu birahmitihi man yashaa-u, wallaahu dhul fadhlil adheem?.
and Allah Ta’ala Knows Best
Mufti Ebrahim Desai