Northern Ireland responded to Friday’s 4-0 UEFA Women’s Euro Qualifying defeat in Portugal with an early goal but went down 2-1 in Lurgan.
Tanya Oxtoby’s side took the lead after only five minutes against a team 25 places above them in the world rankings, Simone Magill squaring for Lauren Wade to slide the ball into the net.
Joely Andrews had a shot blocked before Portugal drew level on 18 minutes, Lucia Alves crossing for Kika Nazareth to head into the bottom corner.
Burns marked her 50th cap with a fine save in turning a Nazareth drive over the crossbar but was beaten a couple of minutes later, Andreia Norton clipping the ball over her.
Northern Ireland are two points behind second-placed Bosnia and Herzegovina in the table, with two games to go next month.
