The Black Cats return to English topflight action at the Stadium of Light after collecting four points from two recent away matches to reach 40 points from 29 league games.
They would be eyeing a home triumph and consecutive league victories and the manager has urged his squad to maintain belief and approach the challenge with ambition.
“I understand how difficult this league is and Brighton is a well-established team in the Premier League with a clear identity,” Le Bris told the club website.
“They are really good on the ball, they are really good at mobility and they can score in many different ways. Their counter press is outstanding.
“We will have to embrace the challenge, reset and show our desire (to win the game).
“We also need to show the quality of our squad, especially after two (home) defeats in a row.
“We need to change the dynamic and it is going to be an exciting challenge.
“Every game is an opportunity to win three points, but against every team in this league is tough. Everyone can beat everyone in this league.
“We have to keep going because we don’t know if 40 points will be enough, and we want to keep being ambitious.”