For the trip to Murrayfield Doussain was dropped to the bench but with Les Bleus trailing the No.9 came on in the second half and kicked what ended up being the winning penalty.
And after his remarkable turnaround, Doussain paid tribute to his teammates who scrapped out a win despite being well below their best.
"When I came back on, I was trying not to think about too much," he said.
"In Cardiff I was thinking too much whereas out there I played my natural game, that's what Patrice Lagisquet asked me.
"It was a penalty that looks easy when you are in the stands, but as the kicker it's a little more complicated, I just tried not to think about it too much.
"I knew there was still time to go after the kick and that we were going to have to get out of our half quickly, put the pressure back on them, nothing else went through my head.
"We were far from perfect in our scrums and lineouts, but the spirit is there, we can all look each other in the eye after that game. Against Cardiff it was a little bit more complicated…"