Study AV for example to see what happened to Saul (10)
'example to see what happened to saul' is the definition.
I can't tell whether this defines the answer.
'study av' is the wordplay.
'study' becomes 'con' (conning is a kind of studying).
'av' becomes 'version' (I am not sure about this - if you are sure you should believe this answer much more).
'for' is the link.
Can you help me to learn more?
(Other definitions for conversion that I've seen before include "necessary to achieve a goal", "Religious experience", "Paul's Damascene experience", "change of heart".)