Fans at the Irish Cup Final sang the national anthem in response to a decision by the Irish Football Association to drop it from the event.
Glentoran beat Cliftonville 3-1 in the match at Windsor Park on Saturday.
Delegations from the UUP and DUP both met with the Irish Football Association last week to express anger from unionists that the national anthem was not to be played.
The IFA said that the match was to be dedicated instead to the Marie Curie Cancer charity.
UUP MLA Michael Copeland met the IFA about the issue last week.
“I am very pleased that the event passed off as successfully as it did despite real fears that the outcome could have been different.”
DUP MLA Michelle McIlveen said: “God Save the Queen is the anthem of our country and it’s only right, given the status of this particular match, that the anthem be played.”
Mr Copeland claimed that Cliftonville fans did not stay to see their own players be presented with their cup final medals.
“Instead, the Glentoran fans applauded the Cliftonville players as the presentations were made to them,” he claimed.