When being afraid of a group of people1 du'a

O Allah, suffice (i. e. protect) me against them however You wish.

Reference:Muslim 4/2300.Hisnul Muslim 132

اللَّهُمَّ اكْفِنِيهِم بمَا شِئْت

Transliteration

Allāhummak-finīhim bimā shi't.

Translation

O Allah, suffice (i. e. protect) me against them however You wish.