The Danish playmaker admitted the first half below-par as Palace came at us, created chances and missed a penalty.
Goalless at the break, Christian ensured the second half wasn’t going to follow the same pattern with a fine opening goal just five minutes after the whistle.
Kyle Naughton clipped a pass forward that Emmanuel Adebayor climbed high to flick on and Christian latched onto the ball, controlled and fired into the top corner.
That sparked a much-improved display and Jermain Defoe put the issue beyond doubt with the second goal in the 73rd minute.
“If you look at the first half, we weren’t good enough, lucky not to concede a goal and we had to look at each other at half-time,” said Christian.
“We knew we still had possibilities to create chances in the second half. We tried to do it and it happened for us.
“We showed character in the second half. We changed it around. We were much better.”
Christian has now scored three goals in our last four matches in the Premier League and said his opener against Palace was all about gambling on Ade winning the initial flick from Kyle’s pass.
“Ade normally wins his headers and then you have to believe in the second ball, I tried to see where it went, it landed right there and it was great to score again.”