There are many ahadeeth that enumerate the
blessings of this surah in its entirety and
regarding the first or last ten ayat.

1. Abu Darda' ~ may Allah be pleased with him
~ related that the Holy Prophet ~ ~ said, " One
who memorized the first ten verses of Suratul
Kahf will be secure against the Dajjal (Anti-
Christ) . Another version says: "One who
commits to his memory the last 10 verses of
this surah will remain immune from the Dajjal.
[Muslim]

2. From Baihaqi: He who recites Suratul Kahf
on yaumul Jumuah (Friday), Allah will shine a
light for him between the two Fridays. [sahih]

3. From Ahmad, Muslim, An-Nisaa'ie, and Ibn
Habban -- that Abu Darda' said the Messenger
of Allah ~ ~ said, "Whoever reads the last 10
ayat from Suratul Kahf, he will be immune
from the fitnah (corruption) of the Dajjal.

4. Al Bukhari, Muslim and others: Al Baraa'
said a man was reading Suratul Kahf in his
home and there was an animal in it (it did not
specify if it was a cat or dog or goat -- it just
used the general term for animal) that started
to become uneasy or nervous. He looked up
and saw a mist or a cloud and it deceived him.
He mentioned it to the Messenger of Allah ~ ~
and he said, "Read (he said the person's name)
for verily sakinah descends for (the recitation
of) Qur'an". The person who was reading was
'Aseed bin Hadheer, as At-Tubraani explained.

5. From At-Tirmithi who proclaimed it sahih:
Abu Darda' said, "The Messenger of Allah ~ ~
said, 'Whoever reads 3 ayat from the beginning
of Suratul Kahf is protected or immune from
the fitnah of the Dajjal. In another version it
says 10 ayat from the beginning of it or 10
ayat from the end of it.

6. Ibn Mardwiyah Al Daiya' in "Al Mukhtaar"
related that Ali ~ may Allah be pleased with
him ~ said that the Messenger of Allah ~ ~
said: "Whoever reads (Suratul) Kahf on yaumul
Jumuah, he is immune for 8 days from all
fitnah that will happen. When the Dajjal comes
out, he will be immune to him.

7. Found in At-Tubraani' s "Al Awsat" and Al
Haakim's "Mustadrak" and who declared it
sahih, Ibn Mardwiyah and Al Baihaqi and Al
Diyaa': Abu Saeed Al Khudari said that the
Messenger of Allah ~ ~ said, "Whoever reads
Suratul Kahf has a light for him from
"maqaamahu" his place (where he is standing)
to Makkah; and whoever reads 10 ayat from
the end of it (the last 10 ayat) then the Dajjal
comes out, he will not be harmed by him.

8. Al Haakim who said it is sahih -- the hadith
of Abu Saeed -- that the Messenger of Allah ~ ~
said, "Whoever reads Suratul Kahf on yaumul
Jumuah, a light will shine for him between the
2 Fridays (until the next Friday).Al Baihaqi also
provided that hadith in "As Sunan" from the
same narrators and from a different chain.

9. Ibn Mardwiyah from Ibn Omar ~ may Allah
be pleased with them both ~ who said the
Messenger of Allah ~ ~ said, "Whoever reads
Suratul Kahf on yaumul Jumuah, for him light
would shine from beneath his foot to 'Aden in
the heavens, shining for him on the Last Day
and he will be forgiven for what occurs
between the 2 Fridays (minor sins)

10. On the authority of Aiesha ~may Allah be
pleased with her~ the Messenger of Allah ~ ~
said, "Shall I not inform you of a surah which
is so full of greatness it reaches between the
heaven and earth and it has blessings written
for it of similar proportions (from the sky to
earth) whoever reads it on yaumul Jumuah is
forgiven what occurred between that Jumuah
and the next, in addition to 3 days (i.e. 10
days in all) and whoever reads the last five ayat
of it when he goes to sleep, Allah will send him
that night what he wants? They said, Yes, O
Messenger of Allah. He said: Surat Ashaabul
Kahf. [I pray that I have translated this
correctly. May Allah forgive me if I have not
conveyed it correctly as these are the words
His Messenger, peace be upon him.]

hmmm