Unusual step — rest in Church in Rome (2,6)

I believe the answer is:

st peters

'church in rome' is the definition.

'unusual step rest' is the wordplay.
'unusual' indicates an anagram.
'step'+'rest'='steprest'
'steprest' anagrammed gives 'ST PETER'S'.

'in' acts as a link.

I've seen this clue in The Times.

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