The Merseyside outfit have played one fewer game than their London counterparts, and Lukaku is hopeful that a win can act as a springboard to securing their place in the top four.
"Look, top four is achievable," he told The Mirror. "It is realistic - we have a good team, we have good young players, but great experienced players, a great mix. If we want to do it, we have to do it now.
"It is Arsenal, they are a big club with a big manager but we don't have to be scared - we have to dictate the play and make sure we enjoy our moment on the pitch, and if we do that we have a great chance.
"We just have to beat Arsenal at the weekend, and then everything is in our hands."
Tomorrow's encounter is scheduled to kick off at 1.30pm.