Lazio president Claudio Lotito believes they can shock Inter Milan today.
Inter need a win to go back to the top of the Serie A leadership.
"We will respect our qualities and always line up our best formation in the championship. Anyway, we are playing for survival," Lotito said.
"Lazio have always respected their commitments and behaved in the right way. Whoever speaks of Lazio not giving their best is insensitive and I don't like this media campaign also because tomorrow there is another game, Parma-Roma.
"Have Roma already won? No one speaks about this, but if the match were to go in a certain way then our encounter with Inter could be different and the Nerazzurri might not have the obligation to win."