Our Lord! Impose not on us that which we have not the strength to bear, grant us forgiveness and have mercy on us. You are our Protector. Help us against those who deny the truth. Qur'an (2:286).
Hadith
Jabir (May Allah be pleased with him) reported: The Messenger of Allah (PBUH) said, "Do not invoke curses on yourself or on your children or on your possessions lest you should happen to do it at a moment when the supplications are accepted, and your prayer might be granted. [Muslim].