God's shown reflected in Michelangelo diptych (4)
I believe the answer is:
idol
'god's' is the definition.
(synonyms)
'reflected in michelangelo diptych' is the wordplay.
'reflected' says the letters should be written backwards.
'in' indicates the answer is hidden within the clue.
'lodi' can be found hidden inside 'michelangelo diptych'.
'lodi' written backwards gives 'IDOL'.
'shown' is the link.
(Other definitions for idol that I've seen before include "'Worshipped object, admired person (4)'" , "Object of excessive adoration" , "Much-loved actor" , "A graven image or object of adoration" , "Graven image or greatly admired person" .)