Though the Reds have endured one of the worst runs of form in their recent history in the past two months, they are still only three points off a place in the top four.
And with games against Wigan Athletic, Portsmouth and Wolves following Arsenal's visit, Liverpool have a chance to claw back lost ground going into the festive period.
Should they take maximum points in those fixtures, the picture will change dramatically going into 2010 which is why Sunday's clash at Anfield has assumed huge significance.
That's why Lucas believes it is vital players give the club a much-needed lift by beating one of their biggest rivals and making a statement of intent.
'This is a massive game for us and if we can win, we will get back close to the top four which is where we want to be,' said Lucas.
'It's the perfect game for us to try something different and show that we can improve from now until the end of the season.
'If we win, it will give us a lot of confidence to go into the run of games we have over Christmas and we are all positive that we can change things around.'
Rafa Benitez will make several changes to the side that was beaten by Fiorentina on Wednesday and Fernando Torres is poised to start for the first time since November 4.
He undoubtedly will sharpen Liverpool's cutting edge, which was so clearly blunt last weekend at Ewood Park in that drab 0-0 draw.
'We had a chance against Blackburn to improve our position but we could not do that and we were very disappointed,' said Lucas.