Real defeated Getafe 4-2.
"It was a complicated match, but we were efficient. Real Madrid is filled with young talented people," said Casillas.
"It will soon be the 12th anniversary of my first match. I was 18 years old and was very nervous. I laid the foundations that day of the path that's brought me here today. I've become more responsible and mature with age. Looking back I admit I realise I've had a great run. I hope to win many more titles."