Give life for one man in Nouvion revolutionary is sheltering (8)
I believe the answer is:
energise
'give life' is the definition.
I don't understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for energise that I've seen before include "Activate" , "Give power to" , "Give active force" , "Motivate" , "To banish inertia" .)