Imaam ibn al-Qayyim (d. 751H) رحمه الله stated:
“Whenever the servant’s ‘Eemaan (faith) becomes
strong, then the fear of the allies of Shaytaan disappears from his heart.
Ighaathatul- Lahfaan, vol. 1, pg. 193, Dār ‘Aalim al-Fawaaid print, 2nd edition
Translation source: MarkazMuaadh.com