"I asked the Messenger of Allah (ﷺ) about the torment of the grave, and he siad: 'Yes, the torment of the grave is real.'" 'Aishah said: "After that I never saw the Messenger of Allah (ﷺ) offer any prayer but he would seek refuge with Allah (SWT) from the torment of the grave."
Sunan an-Nasa'i Book 13, Hadith 130
← Previous Hadith "I said to 'Aishah: 'Tell me of a supplication that the Messenger of Allah (ﷺ) used to say in his prayer.' She said: 'Yes. The Messenger of Allah (ﷺ) used to say: Allahumma inni author bika min sharri ma 'amiltu wa min sharri ma lam a'mal (O Allah, I seek refuge with You from the evil of that which I have done, and the evil of that which I have not done.)'"

Sunan an-Nasa'i Book 13, Hadith 129 Next Hadith → Aishah told him that the Messenger of Allah (ﷺ) used to say the following supplication in his prayer: Allahumma inni audhu bika min 'adhab ilqabri wa 'audhu bika min fitnatil-masihid-dajjal, wa 'audhu bika min fitnatil-mahya walmamati, Allahumma inni 'audhu bika min al-ma'thami wal-maghram ( O Allah, I seek refuge with You from the torment of the grave, and I seek refuge in You from the tribulation of the Al-Masihid-Dajjal, and I seek refuge with You from the trials of life and death. O Allah, I seek refuge in You from sin and debt.) Someone said to him: "How often you seek refuge from debt!" He said: "If a man gets into debt, when he speaks lies, and when he makes a promise, he betrays it."

Sunan an-Nasa'i Book 13, Hadith 131