The Brazilian became a favourite to both Reds fans and players during his 10-year spell on Merseyside, departing on a free transfer this summer after being deemed surplus to requirements by Jurgen Klopp.
Once an integral part of the Liverpool line-up, Lucas fell out of favour during his later years at the club, frequently playing as a makeshift centre-back or being introduced as a late substitute.
He racked up a staggering disciplinary record during his limited appearances last season, starting just 12 games while picking up four yellow cards.
And he picked up where he left off during his debut yesterday, hoofing Chelsea reject Juan Cuadrado in a calamitously-timed tackle to earn his first booking in a Lazio shirt.
Liverpool fans watching flocked to Twitter to pay tribute to the Brazilian after the hilarious intervention.
“That's my boy,” wrote one.
Another said: “I want to preface this by saying that was nasty and I hope Cuadrado is ok.
“But it brought a warm smile to my face to see our Lucas still out there putting in a hard challenge and picking up a yellow.”
“Cuadrado hasn't even come to a stop yet and Lucas is already fixing his hair as he walks away from the carnage,” added a third.
Liverpool winger Sadio Mane called on the Reds to tighten up defensively after throwing away a 3-2 lead in added time to finish all square with Watford on Saturday.
“With all due respect to Watford, we should have won, we were the better team,” the Senegal forward said.
“But it’s football. We’ll accept it, forget it and try to be ready for the next game.”
