The opening 10 minutes saw both sides play some decent football, but they found it difficult to find any room to create a chance.
The Roar began to dominate after that, with Liam Miller going close after controlling a cross in the box.
The away side were on the back foot at the start of the second half, but they were still a danger on the counter-attack.
However, they needed goalkeeper Thomas to be at his best to keep out Henrique after Miller had played him in.
The hosts continued to create chances as the match progressed. Thomas, however, was again there to keep them out. Rogic then saw a rare effort go high over the crossbar for Victory.
However, just when it seemed like the match would end goalless, Brattan slammed home a long-range shot.