“Save our NHS”, say hospital nurses to Chronicle (6)
I believe the answer is:
slogan
'save our nhs say' is the definition.
'hospital nurses to chronicle' is the wordplay.
'hospital' becomes 'san' (short for sanatorium).
'nurses' is an insertion indicator (nurse can mean to hold onto or harbour).
'to chronicle' becomes 'log' (I've seen this in another clue).
'san' placed around 'log' is 'SLOGAN'.
(Other definitions for slogan that I've seen before include "'Motto, watchword (6)'" , "Ad. catchphrase" , "Advertising catchphrase" , "War cry - advertising jingle" , "Memorable advertising phrase" .)