[Machine] The Prophet ﷺ would say, "O Allah, I make you a shield against their harm, and seek refuge in you from their evil." And in the narration of Abu Dawud, from his father, he said, "When the Messenger of Allah ﷺ invoked against a people, he mentioned them."  

أَنَّ النَّبِيَّ ﷺ كَانَ إِذَا خَافَ قَوْمًا قَالَ اللهُمَّ إِنِّي أَجْعَلُكَ فِي نُحُورِهِمْ وَأَعُوذُ بِكَ مِنْ شُرُورِهِمْ وَفِي رِوَايَةِ أَبِي دَاوُدَ عَنْ أَبِيهِ قَالَ كَانَ رَسُولُ اللهِ ﷺ إِذَا دَعَا عَلَى قَوْمٍ فَذَكَرَهُ  

When the Prophet ﷺ feared a (group of) people, he would say: "O Allah, we make Thee our shield against them, and take refuge in Thee from their evils." (Using translation from Abū Dāʾūd 1537)   

أَنَّ النَّبِيَّ ﷺ كَانَ إِذَا خَافَ قَوْمًا قَالَ اللهُمَّ إِنَّا نَجْعَلُكَ فِي نُحُورِهِمْ وَنَعُوذُ بِكَ مِنْ شُرُورِهِمْ