Ferrari's Carlos Sainz celebrated his 29th birthday and kept the home crowd happy with the fastest lap in practice for the Italian Grand Prix on Saturday.
The Spaniard lapped Monza's 'Temple of Speed' with a best time of one minute 21.355 seconds with McLaren's Lando Norris second and 0.019 slower in a second session that was twice red-flagged.
Red Bull's runaway Formula One world championship leader Max Verstappen was top of the first session, in 1:22.657, ahead of a weekend that could secure him a record 10th win in a row.
Lawson, who started his second grand prix weekend as replacement for injured Australian Daniel Ricciardo at AlphaTauri, was 13th and 18th fastest in the two sessions.
Lawson, 21, finished 13th at last weekend's Dutch Grand Prix after having only one day and one qualifying session to prepare for the race.
Verstappen was only fifth later on after his qualifying simulation run was slowed by traffic and he was turned down when he sought another go, with race engineer Gianpiero Lambiase determined to stick to the run plan.
Team mate Sergio Perez, second in the championship but now 138 points adrift after 13 of 22 races, was third fastest in both but halted the second session when he spun at Parabolica with seven minutes remaining.
Ferrari's Charles Leclerc and McLaren's Oscar Piastri were fourth in the first and second sessions respectively.
Verstappen won at Monza last year, with Leclerc starting on pole, and has been in dominant form this season with 11 wins so far.
He has equalled the nine in a row set in 2013 by now-retired Sebastian Vettel on his way to a fourth successive title with Red Bull.
Seven times world champion Lewis Hamilton, with a new contract keeping the Briton at Mercedes until the end of 2025, was eighth in the first session timesheets but only 17th in the second.
Red Bull, Ferrari and Mercedes used only hard tyres during the opening session.
Both of the Ferrari drivers and Russell started the day with new power units, within their allocation of four for the season and therefore without penalty.
Brazilian reserve and F2 champion Felipe Drugovich replaced Lance Stroll at Aston Martin for the first session as part of a requirement to give young drivers track time, and was 18th fastest.
Stroll then brought out the red flags at the Ascari chicane in the second session after his car suffered a fuel system problem but then failed to set a timed lap.
- Reuters