Laa 'ilaaha 'illallaahu wahdahu laa shareeka lahu, lahul-mulku wa lahul-hamdu yuhyee wa yumeetu wa Huwa 'alaa kulli shay'in Qadeer.
None has the right to be worshipped but Allah alone, Who has no partner. His is the dominion and His is the praise . He brings life and He causes death , and He is Able to do all things.
(Recite ten times in Arabic after the Maghrib and Fajr prayers.)
Reference: At-Tirmithi 5/515, Ahmad 4/227. See its checking in Ibn Al-Qayyim Al-Jawziyyah's Zadul-Ma'ad 1/300.