Duas for fear of an unjust authority. Mighty is the one Allah (SWT) protects
Companions of the Prophet ﷺ taught these words for anyone who fears the injustice of a person in authority. They ask Allah (SWT) to stand as a protector between you and harm.
2 sourced Du'as Arabic, transliteration, meaning, and source
Allahumma Rabba-s-samawati-s-sab', wa Rabba-l-'arshi-l-'adheem, kun li jaran min fulani-bni fulan, wa ahzabihi min khala'iqik, an yafruta 'alayya ahadun minhum aw yatgha, 'azza jaruk, wa jalla thana'uk, wa la ilaha illa ant
“O Allah, Lord of the seven heavens and Lord of the mighty Throne, be my protector against [name, son of name] and his allies among Your creation, so that none of them is hasty against me or transgresses. Mighty is the one You protect, exalted is Your praise, and there is no god but You.”
Al-Adab al-Mufrad 707 (sahih per al-Albani, as Ibn Mas'ud's words)
These are the words of the Companion 'Abdullah ibn Mas'ud, taught for anyone who fears the arrogance or injustice of a person in authority. Say the person's name in place of fulan ibn fulan.
Allahu akbar, Allahu a'azzu min khalqihi jami'a, Allahu a'azzu mimma akhafu wa ahdhar, a'udhu billahi-lladhi la ilaha illa huwa, al-mumsiki-s-samawati-s-sab'i an yaqa'na 'ala-l-ardi illa bi-idhnih, min sharri 'abdika fulan, wa junudihi wa atba'ihi wa ashya'ih, mina-l-jinni wa-l-ins, Allahumma kun li jaran min sharrihim, jalla thana'uka wa 'azza jaruk, wa tabaraka-smuk, wa la ilaha ghayruk
“Allah is the Greatest. Allah is mightier than all of His creation. Allah is mightier than what I fear and dread. I seek refuge in Allah, besides whom there is no god, who holds back the seven heavens from falling onto the earth except by His permission, from the evil of Your servant [name], and his troops, his followers and his supporters among the jinn and mankind. O Allah, be my protector from their evil. Exalted is Your praise, mighty is the one You protect, blessed is Your name, and there is no god other than You.”
Al-Adab al-Mufrad 708 (sahih per al-Albani, as Ibn 'Abbas's words)
These are the words of the Companion Ibn 'Abbas, for anyone who must go before a ruler he fears; say it three times. Say the person's name in place of fulan.