'Katabucha', is the Thai term for an incantation or prayer used instrumentally in worship, veneration, invocation and magic. I learnt and recited the Kata Prha Rahu Kam Duang as part of my offering to Rahu. The Kata Prha Rahu Kam Duang is taught here by Ajarn Spencer.to whom it was handed down by master Pra Ajarn Gorp Chai.