Allah is the Most Great, Mightier than all His creation. He is Mightier than what I fear and dread. I seek refuge in Allah, Who there is none worthy of worship but Him. He is the One Who holds the Seven heavens from falling upon the earth except by His command. (I seek refuge in You Allah) from the evil of Your slave (say the person's name), and his helpers, his followers and his supporters from among the jinn and mankind. O Allah, be my support against their evil. Glorious are Your praises and mighty is Your patronage. Blessed is Your Name, there is no true God but You. Narrated Ibn 'Abbas (RA) : When you meet an influential person who is causing terror and you fear that he will attack you, you will say three times: (The dua is mentioned above)