Smalling is still learning his art but is enjoying his chance to shine.
"Chelsea in the Champions League is another massive stage for me," said Smalling.
"To be able to play in these latter stages of the Champions League is what most players in the world dream to be a part of and I can't wait to play my part."
It will be the biggest game of Smalling's career, but he will need help.
"Rio Ferdinand has guided me all the way through," he added.