Bismillahi-lladhi la yadurru ma'asmihi shay'
مَنْ قَالَ: بِسْمِ اللَّهِ الَّذِي لَا يَضُرُّ مَعَ اسْمِهِ شَيْءٌ فِي الْأَرْضِ وَلَا فِي السَّمَاءِ وَهُوَ السَّمِيعُ الْعَلِيمُ، ثَلَاثَ مَرَّاتٍ، لَمْ تُصِبْهُ فَجْأَةُ بَلَاءٍ حَتَّى يُصْبِحَ
Man qala: bismi-llahi-lladhi la yadurru ma'a-smihi shay'un fi-l-ardi wa la fi-s-sama'i wa huwa-s-Sami'u-l-'Alim, thalatha marrat, lam tusibhu faj'atu bala'in hatta yusbih.
"Whoever says three times: In the name of Allah, with whose name nothing on earth or in the heavens can cause harm, and He is the All-Hearing, the All-Knowing, no sudden affliction will strike him until morning."
Narrated by Uthman ibn Affan. Sunan Abi Dawud 5088, Jami' at-Tirmidhi 3388
A short reflection
Three times in the morning, three times in the evening. The verbal seal of Bismillah, layered.