Marquez conceded that Lorenzo had the upper hand in Spain despite him riding with an injured finger.
"I tried to win but today when I was behind Jorge and I saw the way he was riding, I thought 'okay today is the day for Jorge. My place is second,'" said Marquez.
"I'm really happy because by lap six, seven my finger felt okay, but I was using my right arm more and I started to get some arm pump problems.
"I knew I had to manage this because if not I would be struggling at the end. Then I saw that Valentino [Rossi] was catching me step-by-step and I say, 'okay, it will be like Argentina!' But then I was pushing and I saw that he was struggling to reduce the gap and in the end I was able to keep second," he added.
"I'm so happy for this second place and these 20 points," he added.