The reigning English champions made it two from two in Europe's premier club competition thanks to a first-half header from Islam Slimani which has the East Midlands outfit sitting top of Group G with a perfect record after their 3-0 victory over Club Brugge a fortnight ago.
"We know we've got to be resilient, especially at home," said centre-half Morgan.
"We had to dig in at the end there so it's pleasing to get 3pts.
"Slimani is a handful and he works hard for his goals so he deserves a lot of credit. Pleased for him tonight."