Cryptic across

1 A pair of bishops reported Scot, being derogatory about an OT river (6)

4 In New York, waistcoat is adopted by Americans for aspects of Zoroastrianism (6)

9 At the sound of a bell they fire guns at something monstrous (7)

10 Doctor’s eaten by big cat almost, at a dance in the Caribbean (5)

11 US-Japanese religion is either/or, essentially (5)

12 Swiss theologian’s among saints you French discovered after a time (7)

13 She’s enchanting in Camelot being of angry male, Rocky (6,2,3)