The France striker was amongst the goals for Real's victory over Getafe on the weekend.
"You must know that the three of us are friends off the field, so that also helps when we play together," said Benzema.
"Mesut and Cristiano are such good players you do not need to work a lot with them and our understanding in games has come naturally. When I ask for the ball with my attacking runs I know it will come.
"Together we enjoy the combinations that we do in small spaces. We can make the ball move very fast."