In the main Tolkien tale “evil” would be fought, countered, kept in check, not by a great power, but as Gandalf says to Galadriel ” I found it is in the small things… every day deeds of ordinary folk, that keeps the darkness at bay. Simple acts of kindness and love.”
*http://steppenwolfmoscow1.blogspot.com/2014/05/cacology-cacosophy-pathosophy.html?m=1
Stephen Lapeyrouse . . . Notes Dropped Along the Way 