Say three times:
بِسْمِ اللّٰهِ الَّذِيْ لَا يَضُرُّ مَعَ اسْمِهِ شَيْءٌ فِي الْأَرْضِ وَلَا فِي السَّمَاءِ وَهُوَ السَّمِيْعُ الْعَلِيْمُ
In the name of Allah with whose name nothing is harmed on earth nor in the heavens and He is The All-Hearing, The All-Knowing.
Bismillaahil-lathee laa yadhurru ma'as-mihi shay'un fil-'ardhi wa laa fis-samaa'i wa Huwas-Samee 'ul- 'Aleem.
Whoever recites it in the morning will not be afflicted by any calamity before evening, and whoever recites it in the evening will not be overtaken by any calamity before morning