Minister to, tend (5)
I believe the answer is:
treat
This clue is a double definition.
'minister to' is the first definition.
(I've seen this in another clue)
'tend' is the second definition.
(I've seen this before)
(Other definitions for treat that I've seen before include "Apply remedies" , "Pay for someone's food or entertainment" , "A nice surprise" , "Attend to; surprise gift" , "Deal with; an outing" .)