Fool complied with guards leading priest (6)
I believe the answer is:
muppet
'fool' is the definition.
I know nothing about this answer so I can't judge whether this works.
'complied with guards leading priest' is the wordplay.
'complied with' becomes 'met' (I've seen this in another clue).
'guards' means one lot of letters goes inside another (inserted letters are guarded).
'leading' becomes 'up' (similar in meaning).
'priest' becomes 'p' (ecclesiastical abbreviation).
'up'+'p'='upp'
'met' enclosing 'upp' is 'MUPPET'.
Can you help me to learn more?
(Other definitions for muppet that I've seen before include "Jim Henson puppet" , "Weak person (informal)" , "Kermit, Fozzie Bear or Animal?" , "Kermit or Miss Piggy, say" , "Idiot" .)