The Ashta Bhairava — the eight named in one verse
One anushtubh that names all eight principal Bhairavas in order: Asitanga, Ruru, Chanda, Krodha, Unmatta, Kapali, Bhishana and Samhara.
Bhairava Purna Rupo Hi
The verse that opens the Ashta Bhairava Dhyana Stotram: Bhairava is the complete form of Shiva, and those who miss it are deluded by Shiva's own maya.
Bhairava Stava of Abhinavagupta — opening verse
Abhinavagupta's hymn to Bhairava, from the Stotravali: I worship in my heart the lord who pervades everything moving and unmoving, by a mind made of you.
Kalabhairava Ashtakam — opening verse
The first of the eight verses to the lord of Kashi, each closing on the same line: I worship Kala Bhairava, master of the city of Kashi.
Apaduddharaka Batuka Bhairava Dhyanam
The five-verse visualisation of Batuka Bhairava, the child form called Apaduddharaka — 'he who lifts one out of calamity'. Recited before his hundred and eight names.
Om Hrim Krim Hum Hrim Kalabhairavadevaya Namah
The four-bija invocation that opens each decade of the Kalabhairava Ashtottarashatanamavali, the hundred and eight names.
Om Ham Sham Nam Gam Kam Sam Kham Mahakala Bhairavaya Namah
The seven-bija mantra of Mahakala Bhairava, given in the mantra section of the Ashta Bhairava Dhyana Stotram.