The 3-0 reverse at the Emirates left Owen Coyle's men rooted to the foot of the Barclays Premier League table with just three points - all taken in the opening day win at Queens Park Rangers.
It's a run of five defeats on the spin and one which Robinson knows needs to come to an end soon.
"Obviously we were frustrated with the outcome against Arsenal, but it's always difficult when you go down to ten men at a place like that and against those players," he told the club's official website.
"We can't dwell on that result and have to look forward. The group of players will stick together and, as always, we will look to the next game which is this Sunday.
"We know it will be another tough test but this is the time when we need to show our character. No one wants to lose games and everyone is feeling frustrated, but the fans need to look at the fixture list and see what games we have coming up.
"Not a lot of clubs get points from the top six sides. After Chelsea we've got all those teams, expect for Tottenham, out of the way until the New Year.
"Hopefully we can pick up points over the next few weeks, but just because we are playing another top team in Chelsea doesn't mean that we won't be confident. We always feel that we can get results at home and we hope the fans get behind us at the weekend and lead us to victory."