Sahih Bukhari Volume 008, Book 075, Hadith Number 387.

Narated By 'Aisha : The Prophet used to seek refuge with Allah (by saying), "O Allah! I seek refuge with You from the affliction of the Fire and from the punishment in the Fire, and seek refuge with You from the affliction of the grave, and I seek refuge with You from the affliction of wealth, and I seek refuge with You from the affliction of poverty, and seek refuge with You from the affliction of Al-Masih Ad-Dajjal."