Mauboy had the crowd dancing and singing along to her song "We Got Love".
The show will be broadcast on BBC One and hosted by Graham Norton, with the victor expected to be announced at 11.35pm this evening.
She was performing her track Storm dressed in a white asymmetric jumpsuit with flashing lights behind her as the audience sang along enthusiastically when an intruder snatched her microphone.
"Well I don't know what will happen now, whether we will get another performance or not".
Viewers praised SuRie for her handling of the rattling moment, as security bounded on stage and dragged the man away.
SuRie declined the opportunity to perform again.
The favorite of the bookmakers after the first semi-final was the 31-year-old Greek pop singer of Albanian origin, Eleni, Purara, the representative of Cyprus, with the song "Fuego".
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After the game, he was presented with a commemorative shirt on the pitch, and was joined by older brother Kolo. He was also named in the Team Of The Year when City won the Premier League title the following season.
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Gomez played through the pain barrier in those matches, and has now been forced to undergo surgery after aggravating the problem. Gomez, who has played at both centre-back and right-back this season, has made 31 appearances across all competitions.
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These two teams have been involved in some of the most exciting matchups of the year, and this series has not disappointed. Obviously, it's do or die right now for us so you have that in the back of your, so you have to leave it all on the ice.
Eurovision was first held in 1956 with the aim of uniting Europe after World War II.
Ireland have made the Eurovision finals for the first time since 2013.
The kitsch is conspicuously absent this year and the usual extravagant stage effects are nowhere to be seen.
"It's just harmless fun, it is just a really good atmosphere", said Lee Torrance, a 43-year-old from Worcestershire in the United Kingdom who wore a vest and bowtie with the Union Jack pattern to the final.
"Cyprus have overtaken previous favourites Israel, with entrant Netta's unconvincing rehearsals performance of Toy seeing the entry drift before coming back into 3/1 second favouritism thanks to getting a highly advantageous second half slot in the draw".
Viewers and professional juries in all 43 participating countries will pick the victor, with the tele-voting and juries each counting for 50 percent.