Whoever recites Surah al-Kahf, the Dajjal will not be given power over him

It is narrated from Sayyiduna Abu Sa'id al-Khudri (may Allah be pleased with him) that he said: "Whoever recites Surah al-Kahf exactly as it was revealed, then goes out to face the Dajjal, the Dajjal will not be able to overpower him, nor will he have any way against him."
This hadith has a sahih (authentic) chain of narration, but the two Shaykhs did not record it.

It is narrated from Sayyiduna Samurah bin Jundub (may Allah be pleased with him) that the Prophet (peace and blessings be upon him) said: "Soon a time will come when Allah Almighty will fill your hands with non-Arabs; then they will prove to be lions (on the battlefield) who do not flee. They will kill your fighters and consume your spoils (fay')."
This hadith has a sahih (authentic) chain of narration, but the two Shaykhs did not record it.

It is narrated from Sayyiduna Abu Hurayrah (may Allah be pleased with him) that the Prophet (peace and blessings be upon him) said: "Years will come upon the people in which the liar will be believed and the truthful one will be belied, the trustworthy will be deemed treacherous, and in them the 'Ruwaybidah' will speak." It was said: O Messenger of Allah, what is the 'Ruwaybidah'? He (peace and blessings be upon him) said: "The foolish and base person who speaks about the (political and social) affairs of the general public."

Ibn Qudamah narrates through Yahya bin Sa'id al-Ansari from al-Maqburi: "And in that era, shamelessness and indecency will become widespread."
This hadith has a sahih (authentic) chain of narration, but the two Shaykhs did not record it, and this narration of Yahya bin Sa'id al-Ansari from al-Maqburi is extremely gharib (rare).

Salih bin Umar bin Shu'ayb narrates from his grandfather Shu'ayb bin Umar al-Azraq, who said: We set out for Hajj and passed along the route of al-Munkadir, for in those days people used to travel by that route, and we lost our way. He said: While we were in that state, suddenly a Bedouin appeared before us as if he had emerged from the earth. He asked: O Shaykh, do you know where you are? I said: No. He said: You are at al-Raba'ib, and this white hill that you see is the bones of (the tribes of) Bakr bin Wa'il and Taghlib, and this is the grave of Kulayb and his brother Muhalhil. He said: Then he showed us the way and said: There is a man here who has the honour of companionship with the Prophet (peace and blessings be upon him); would you like to meet him? I said: Yes. So he took us to an elderly man who had a band tied over his forehead and was staying in a leather tent. We asked him: Who are you? He said: I am al-Adda' bin Khalid, known in the Days of Ignorance by the title 'Faris al-Dahya'' (the horseman of al-Dahya'). He said: We said to him: May Allah have mercy on you, narrate to us a hadith of the Prophet (peace and blessings be upon him). He said: We were in the presence of the Prophet (peace and blessings be upon him) when suddenly he (peace and blessings be upon him) stood up as though greatly alarmed; then he (peace and blessings be upon him) returned and said: "I warn you of three Dajjals." At this, Sayyiduna Ibn Mas'ud (may Allah be pleased with him) said: O Messenger of Allah, may my father and mother be sacrificed for you! You (peace and blessings be upon him) have told us about the one-eyed Dajjal and about the greatest of liars; who is this third one? He (peace and blessings be upon him) said: "A man who will appear among a people whose first and last are all doomed to destruction; a perpetual curse will be upon them. He will be in the time of the trial of 'al-Jarifah' (the sweeping, devastating trial). He will be the most cunning and crafty Dajjal, who will exploit the servants of Allah in the name of the family of Muhammad, while he will be the furthest of people from his (peace and blessings be upon him) Sunnah."
It is the rule of Imam Abu Bakr Muhammad bin Ishaq that when he narrates a hadith which he does not consider sahih, he says about its narrator: So-and-so and so-and-so have narrated from him, and I do not know him to be of integrity and trustworthiness. Yet he has recorded this hadith on the condition of the Sahih, and he is a leader and exemplar in this science of hadith.