Hadith #4323 (Sunan Abi Dawud)
Book: Battles (Kitab Al-Malahim)
Narrator(s): Abu Ja'far al-Nafaili عبد الله بن محمد أبو جعفر النفيلي الحران, Abu Salama bin 'Abdur Rahman أبو سلمة بن عبد الرحمن بن عوف, al-Zuhri ابن شهاب الزهري‎, محمد بن مسلم, Fatima bint Qays, Muhammad bin 'Abdur Rahman b. Abi Dh'ab محمد بن عبد الرحمن بن أبي ذئب, Uthman bin 'Abdur Rahman عثمان بن عبد الرحمن بن مسلم - الطرائفي
Grade: Sahih

If anyone memorizes ten verses from the beginning of surat al-Kahf, he will be protected from the trial of Dajjal (Antichrist).
Abu Dawud said: In this way Hashim al-dastawa’I transmitted it from Qatadah, but he said : “If anyone memorizes the closing verses of surat al-Kahf.” Shu’bah narrated from Qatadah the words “from the end of al-Kahf.

Source: https://parallelquran.com/hadith/sunan-abi-dawud-4323/