Leinster captain Jamie Heaslip and head coach Matt O'Connor both praised Bath's dangerous backs after Saturday's win.
Bath outscored their hosts two tries to zero but Ian Madigan's boot and the power of Leinster's scrum secured a narrow 18-15 victory.
“They had a lot of pace in the back and very evasive runners,” Heaslip told reporters after the game.
“If you switch off and make individual or system errors they will punish you and that happened twice. Do that and you make life hard for yourself as we did in the last 20 minutes.
“But we can take a lot of positives out of it and whether it’s Toulon or whoever in the next round, we can go into it with confidence. At this time of the season it’s just big game after big game.
"That was one of the fastest, toughest games we have played all season.”
O'Connor backed up Heaslip's comments, while praising his side's scrummaging performance.
“They had tremendous threat on the ball, Joseph, Eastmond, Banahan, Watson…I thought we did a good job for most of the game.
"We played in the right areas of the park, took our chances when they came and our scrum was outstanding.”