Lucas helped the visitors to the win as a second-half substitute.
"Lucas came on and deserves a special mention," he told liverpoolfc.com.
"I think there was a lot of pressure on him, the Brazil coach was there to watch him, he hasn't played much of late but he has worked his socks off to get fit.
"The ball he played for the second goal, people have been raving about [Philippe] Coutinho all year and the passes he has made and for me that was right up there with Brazil's best and it helped up get the win.
"I think it shows what we have got in this squad now. We have got a bit of everything, a bit of class and skill in Suarez, Sturridge and Coutinho but we have got some steel, we have got some lads who want to roll their sleeves up and dig in."