Dua Against the Evil Eye (What to say when you fear you may afflict something with the evil eye)

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

If you see anything of your brother that pleases you, or of his person or of his property [then ask Allah to bless him in it] for the envious eye is real.