Both have not performed well lately Juventus got 3D 1L 1W and Lazio got 2D 2L 1W in their last 5 matches it can be said that they have lost a lot of points so if they do not focus on the next matches it is not impossible that they will lose their place in the top 5 because the clubs below them are trying to catch up on points and also want to occupy the top 5 positions in order to enter the European zone. Yes, the match will be difficult for them because they are facing a club at the top of the standings who are competing in the title hunt but the most important thing before facing that match they have to focus on the first 3 games.
Although both have not performed well lately, Juventus is still quite good in Serie-A and if you look at Juventus' performance it is not too bad even though they experienced two consecutive defeats in their last match. Lazio and Juventus have the ambition to be in the top three and maybe Lazio will not make mistakes that will cause their position to be shifted by Juventus, but facing Napoli is not something easy because so far they have appeared to improve as champion candidates.
Both Lazio and Juventus will face a difficult match and I think it will be a difficult match for both of them. To ensure that their position is not shifted by the challenger, both of them must be able to win the match, but if you see them facing a strong team, it will be much more difficult to get three full points.