Salaam my dear sisters  please take the time to watch this lecture which is on Al Kahf
Surah 18. The Cave. Insha Allah every Friday i will post  surah Al Kahf as  surah of the day because
Imam Ahmad recorded that Al-Bara' said: "A man recited Al-Kahf and there was an animal in the house which began acting in a nervous manner. He looked, and saw a fog or cloud overhead. He mentioned this to the Prophet , who said:

«اقْرَأْ فُلَانُ، فَإِنَّهَا السَّكِينَةُ تَنْزِلُ عِنْدَ الْقُرْآنِ أَوْ تَنَزَّلَتْ لِلْقُرْآن»
(Keep on reciting so and so, for this is the tranquillity which descends when one reads Qur'an or because of reading Qur'an;) This was also recorded in the Two Sahihs. This man who recited it was Usayd bin Al-Hudayr, as we have previously mentioned in our Tafsir of Surat Al-Baqarah. Imam Ahmad recorded from Abu Ad-Darda' that the Prophet said:

«مَنْ حَفِظَ عَشْرَ آيَاتٍ مِنْ أَوَّلِ سُورَةِ الْكَهْفِ عُصِمَ مِنَ الدَّجَّال»
(Whoever memorizes ten Ayat from the beginning of Surat Al-Kahf will be protected from the Dajjal.) This was also recorded by Muslim, Abu Dawud, An-Nasa'i and At-Tirmidhi. According to the version recorded by At-Tirmidhi,

«مَنْ حَفِظَ ثَلَاثَ آيَاتٍ مِنْ أَوَّلِ الْكَهْف»
(Whoever memorizes three Ayat from the beginning of Al-Kahf.) He said, it is "Hasan Sahih. '' In his Mustadrak, Al-Hakim recorded from Abu Sa`id that the Prophet said:

«مَنْ قَرَأَ سُورَةَ الْكَهْفِ فِي يَوْمِ الْجُمُعَةِ أَضَاءَ لَهُ مِنَ النُّورِ مَا بَيْنَهُ وَبَيْنَ الْجُمُعَتَيْن»
(Whoever recites Surat Al-Kahf on Friday, it will illuminate him with light from one Friday to the next.) Then he said: "This Hadith has a Sahih chain, but they (Al-Bukhari and Muslim) did not record it.'' Al-Hafiz Abu Bakr Al-Bayhaqi also recorded it in his Sunan from Al-Hakim, then he narrated with his own chain that the Prophet said:

«مَنْ قَرَأَ سُورَةَ الْكَهْفِ كَمَا نَزَلَتْ، كَانَتْ لَهُ نُورًا يَوْمَ الْقِيَامَة»
(Whoever recites Surat Al-Kahf as it was revealed, it will be a light for him on the Day of Resurrection.)