Stop everyone following saint (5)
I believe the answer is:
stall
'stop' is the definition.
(I know that stall is a more specific form of the action stop)
'everyone following saint' is the wordplay.
'everyone' becomes 'all' (all people).
'following' says to put letters next to each other.
'saint' becomes 'st' (abbreviation).
'all' put after 'st' is 'STALL'.
(Other definitions for stall that I've seen before include "Section of a stable and theatre" , "Enclosure" , "Put off" , "(Of engine) stop running; booth" , "Part of the stable" .)