Sexton and Phillips both dotted down in the first half for Metro while fellow Lions Dan Lydiate and Jamie Roberts both impressed as well for the hosts.
And with Phillips now off to team up with Wales, the scrum-half insists the hard work is finally starting to pay off.
"This was a very important victory for us," he said. "We controlled possession, the contact, in defence.
"We scored points when we made breaks, that was the big difference for us in this game.
"Everyone gave their all and put in a good performance.
"It's great, I'm feeling better and better. We are all working extremely hard to get better and now it is starting to show."