Dua #1109•Ahmad 4/447, Ibn Majah, Malik. Al-Albani graded it authentic in Sahihul-Jami' As-Saghir 1/212. Also see Al-Arna'ut's checking of Ibn Al-Qayyim's Zadul-Ma'ad 4/170.

When in fear of afflicting something with an (evil) eye from oneself

Hisnul Muslim
#1109

إِذَا رَأَى أَحَدُكُم مِنْ أَخِيهِ أَوْ مِنْ نَفْسِهِ أَوْ مِنْ مَالِهِ مَا يُعْجِبُهُ [فَلْيَدْعُ لَهُ بِالْبَرَكَةِ] فَإِنَّ الْعَيْنَ حَقٌّ