When startled1 du'a

There is none worthy of worship but Allah!

Reference:Al-Bukhari, cf. Al-Asqalani, Fathul-Bari 6/181, Muslim 4/2208.Hisnul Muslim 245

لا إلهَ إلاّ اللّهُ

Transliteration

Lā ilāha illallāh!

Translation

There is none worthy of worship but Allah!