The Portuguese has struggled domestically this season, but he once again stepped up in Europa League to give Wolves an almost insurmountable lead in the last-32 tie.
He told BT Sport: "It is a great result at home, a few goals, a clean sheet - it is in our hands now to complete the job in the second leg.
"Things happen naturally. I am struggling a lot to score in the Premier League but sometimes when small things change, things appear. I am very happy to score and to get the win."