Genius tutelary

The OED (229) says regarding genius: "With reference to classical pagan belief: The tutelary god or attendant spirit allotted to every person at his birth to govern his fortune and determine his character … ; also, the tutelary and controlling spirit similarly connected with a place, an institution, etc." To this we may add that tutelary pertains to guardianship.

Context: 
Freed from its genius tutelary
Opera: 
Act: 
Act I