Kalabhairava is an incarnation of Lord Shiva. He is also the presiding deity of the planet Rahu. Hence for Rahu related troubles reciting the kalabhairava ashtakam is a very good remedy.
Devaraaja sevyamaana paavanaanghri pankajam
Vyaalayagya suutramindu shekharam Krupaakaram
Naaradaadi yogivrunda vanditam Digambaram
Kaashikaa puraadhinaatha kaalabhairavam Bhaje .. 1
Bhaanu kotib aasvaram Bhavaabdhi taarakam
Param Niilakanthamiipsitaarthadaayakam Trilochanam
Kaalakaalamambujaakshamakshashuulamaksharam
Kaashikaapuraadhinaathakaalabhairavam Bhaje .. 2
Shuulatankapaashadandapaanimaadikaaranam
Shyaamakaayamaadidevamaksharam Niraamayam
Bhiimavikramam Prabhum Vichitrataandavapriyam
Kaashikaapuraadhinaathakaalabhairavam Bhaje .. 3
Bhuktimuktidaayakam Prashastachaaruvigraham
Bhaktavatsalam Sthitam Samastalokavigraham
Vinikvananmanogyahemakinkiniilasatkatim
Kaashikaapuraadhinaathakaalabhairavam Bhaje .. 4
Dharmasetupaalakam Svadharmamaarganaashanam
Karmapaashamochakam Susharmadhaayakam Vibhum
Svarnavarnasheshhapaashashobhitaangamandalam
Kaashikaapuraadhinaathakaalabhairavam Bhaje .. 5
Ratnapaadukaaprabhaabhiraamapaadayugmakam
Nityamadvitiiyamishhtadaivatam Nira.Njanam.
Mrutyudarpanaashanam Karaaladamshhtramokshanam
Kaashikaapuraadhinaathakaalabhairavam Bhaje .. 6
Attahaasabhinnapadmajaandakoshasamtatim Drushhtipaattanashhtapaapajaalamugrashaasanam
Ashhtasiddhidaayakam Kapaalamaalikaadharam
Kaashikaapuraadhinaathakaalabhairavam Bhaje .. 7
Bhuutasa.Nghanaayakam Vishaalakiirtidaayakam
Kaashivaasalokapunyapaapashodhakam Vibhum
Niitimaargakovidam Puraatanam Jagatpatim
Kaashikaapuraadhinaathakaalabhairavam Bhaje .. 8
Phalastuti
Kaalabhairavaashhtakam Pathanti Ye Manoharam
Gyaanamuktisaadhanam Vichitrapunyavardhanam
Shokamohadainyalobhakopataapanaashanam
Prayaanti Kaalabhairavaamghrisannidhim Naraa Dhruvam