Speaking in the Daily Record, Pat said: “I remember preparing for my international debut and although this weekend will be a totally different scenario the degree of excitement will be the same.
“Everyone in the camp just wants the game to happen as soon as possible now.
“It is going to be a massive climax to a great season and we just can’t wait to get out there at the RDS.
“I have played there several times and I know the atmosphere will be amazing, particularly with it being Brian O’Driscoll’s last match.
“It is going to be so noisy and I’m sure the 3000 Glasgow fans will play their part in that.
“It is going to be a real battle for 80 minutes – total intensity. But I know we can do it.
“We have won nine matches on the trot to get this far and the aim is simply to keep that momentum going and to stay sharp.
“Most of us have been with the Warriors for a while so we know what each other is feeling and it is about containing that excitement. We need to keep that nervous energy for the right time and get to a peak when it matters.”