Flustered peacekeepers with compulsion to carry bible (8)
I believe the answer is:
unnerved
'flustered' is the definition.
(I've seen this in another clue)
'peacekeepers with compulsion to carry bible' is the wordplay.
'peacekeepers' becomes 'UN' (United Nations, peacekeeping organisation).
'with' is a charade indicator (letters next to each other).
'compulsion' becomes 'need' (a compulsion is a need to do something).
'to carry' means one lot of letters goes inside another.
'bible' becomes 'rv' (Revised Version, revision of King James Bible).
'need' placed around 'rv' is 'nerved'.
'un'+'nerved'='UNNERVED'
(Other definitions for unnerved that I've seen before include "Daunted" , "Rattled - perturbed" , "Intimidated" , "scared" , "Caused to lose courage, shaken" .)