Midfielder Lee McCulloch is relishing his involvement in the European campaign, having joined from Wigan in the summer.
He added on ITV1: "I had a shot from long range that I should have hit the target with, I took my eye off the ball a bit.
"I think it breeds confidence when you're pulling off results like that."
"They never really created that much," said McGregor.
Reflecting on his outfield team-mates' display, he said: "I thought the boys worked very hard and they deserved a draw in the end."
McGregor admitted he flicked a free-kick from Ronaldinho onto the bar in the first half.
The ball went behind for what should have been a corner but Rangers escaped with a goal kick as the officials failed to notice McGregor's decisive intervention.
"I got a wee touch," McGregor admitted, "but I'm not going to turn around (to the referee) and say, 'By the way I got a touch'."