Atmosphere of fate in revolution (4)
I believe the answer is:
mood
'atmosphere' is the definition.
(I've seen this before)
'fate in revolution' is the wordplay.
'fate' becomes 'doom' ('doom' can be a synonym of 'fate').
'in revolution' says the letters should be written backwards.
'doom' in reverse letter order is 'MOOD'.
'of' acts as a link.
(Other definitions for mood that I've seen before include "Feeling of doom" , "Frame of mind" , "Emotional state" , "melancholy" , "State of mind, humour" .)