Musnad Ahmad 30:752

Zayd ibn al-Hubab narrated to us, Abd al-Rahman ibn Thawban narrated to us, Abdullah ibn al-Fadl narrated to me, from al-A’raj, from Abu Hurayrah: That the Messenger of Allah (may Allah bless him and grant him peace) used to seek refuge from four: from the punishment of Hell, the punishment of the grave, the trial of life and death, and the trial of the Dajjal.