On reflection, offer everyone a portion to show respect (6)
I believe the answer is:
revere
'respect' is the definition.
(I know that respect is a more specific form of revere)
'on reflection offer everyone a portion to show' is the wordplay.
'on reflection' says the letters should be written in reverse.
'to show' says the answer is hidden in the clue.
'erever' is hidden within 'offer everyone portion'.
'erever' in reverse letter order is 'REVERE'.
(Other definitions for revere that I've seen before include "Paul, perhaps" , "Lapel, for a midnight rider?" , "Hold in high respect" , "Feel religious veneration for" , "Greatly admire" .)