That's all for now. This quarter-final promised so much after the opening 35 minutes but fizzled out in the second half. Donegal book a semi-final date with Monaghan while Fermanagh face Wexford in the qualifiers. We'll be back next Sunday for live coverage of the first semi-final between Tyrone and Cavan.
Donegal manager Rory Gallagher said: "We were disappointed to lose Neil to a red card as he is one of our leaders.
"I felt we should have been more than two ahead at half-time but we dug ourselves out of it and now plan ahead for meeting Monaghan in the semi-finals"
BBC Sport NI punditQuote Message: Fermanagh missing the penalty before half-time was crucial. Donegal's superior experience and know-how was decisive in the second half but they have to improve if they want to win the Ulster title.
BBC Sport NI punditQuote Message: Fermanagh never looked like winning - they never pushed forward. They need to change their style of football as they will never win anything playing the way they did today.
Colm McFadden's free completes the scoring and 14-man Donegal secure a five-point win. The game fizzled out after an exciting first half and Fermangh will be disappointed they could not capitalise with the extra man.
Eoin McHugh adds to Donegal's tally with a sweetly struck point
BBC Sport NI punditQuote Message: The stop-start nature of the last five minutes suits Donegal - they are running the clock down.
Five minutes left and Tomas Corrigan's free leaves Fermanagh five back
Ryan Jones is clear on the Donegal goal but can only fire over - that really had to be a three-pointer
Tomas Corrigan free for Fermanagh, who need a goal to get them back in this game
It's all so easy now - an unmarked Martin McElhinney slips it over
Paddy McBrearty splits the uprights and there's seven between the teams. Is this going to be a fifth straight one-sided outcome in the championship?
Martin O'Reilly slices through the Fermanagh midfield before slotting over
MacNiallais with his second goal, palming in from close range to finish a superb Donegal move. Fermanagh defender Che Cullen is black-carded seconds later for a foul on Michael Murphy.
Michael Murphy has not been at his brilliant best today but he curls over a free to put Donegal two in front
First blood of the second half to Fermanagh, courtesy of a Tomas Corrigan free
Christy Toye is a half-time introduction for Donegal, replacing the yellow-carded Leo McLoone