Relief from ritual including clairvoyance (7)
I believe the answer is:
respite
'relief' is the definition.
(respite is a kind of relief)
'ritual including clairvoyance' is the wordplay.
'ritual' becomes 'rite' ('rite' can be a synonym of 'ritual').
'including' indicates putting letters inside.
'clairvoyance' becomes 'esp' ('esp' can be a synonym of 'clairvoyance').
'rite' enclosing 'esp' is 'RESPITE'.
'from' acts as a link.
(Other definitions for respite that I've seen before include "Brief period of rest" , "Pause; reprieve" , "Brief let-up" , "Breathing space" , "Pause from exertion, etc" .)