Repeat ceremony involving European count (9)
I believe the answer is:
reiterate
'repeat' is the definition.
('reiterate' can be a synonym of 'repeat')
'ceremony involving european count' is the wordplay.
'ceremony' becomes 'rite' (rite is a kind of ceremony).
'involving' is an insertion indicator.
'european' becomes 'e' (abbreviation e.g. EU).
'count' becomes 'rate' (I've seen this in other clues).
'rite' placed around 'e' is 'reite'.
'reite'+'rate'='REITERATE'
(Other definitions for reiterate that I've seen before include "Say something a number of times" , "Belabour" , "State again" , "Recapitulate" , "sound twice?" .)