Musnad Ahmad 30:3050

Waki' narrated to us, he said: Al-Awza'i narrated to us, from Hassan ibn Atiyyah, from Muhammad ibn Abi Aishah, from Abu Hurairah, he said: The Messenger of Allah (peace and blessings of Allah be upon him) said: "When one of you performs the Tashahhud, let him seek refuge in Allah from four things. He should say: 'O Allah, I seek refuge in You from the punishment of Hell, the punishment of the grave, the evil of the trial of the False Messiah (Al-Masih ad-Dajjal), and from the evil of the trial of life and death.'"