After suffering a 0-4 drubbing at the hands of German giants Bayern Munich, the nine-time Russian champions will be looking for a result that will help them progress through the group stage.
And midfielder Denis Boyarintsev said his teammates were ready for the Portuguese side, who lost to Spartak's Moscow rivals, CSKA, in the 2005 UEFA Cup final.
"We respect our opponents, but no one is afraid of them," he said.
The 28-year-old, who played five times for Russia in 2004, said he could not side any stars in the Sporting line-up and suggested organization would be the key to victory.
"If we manage to organize ourselves in right, everything will be okay," he said.
The experience midfielder also had a warning after Sporting's 1-0 defeat of Inter Milan in their previous Champions League tie. "They played quite dirty against Inter and there could be some provocations from them," he said.
