Arteta opened the scoring from the spot before he was harshly adjudged to have fouled ex-Gunner Marouane Chamakh as the striker ran through on goal. Arsenal then soaked up plenty of pressure before Aaron Ramsey set Giroud free to fire home what proved to be the goal that killed the game off.
Keith Millen, Palace's caretaker manager, set his team up to contain the Gunners from the start. In the first half contain them they did. Arsenal were poor in possession and were second to the ball for most of the first 45 minutes as Palace set the tempo. Barry Bannon went close on a couple of occasions and Julian Speroni did not have a single save to make before the penalty.
The opening goal came after a needless challenge by Adlene Guedioura on Serge Gnabry in the opening seconds of the second half. Millen must surely have been incensed by the lazy and easily avoidable challenge that gave the advantage to the visitors.
Arteta stood up and duly dispatched the spot kick.
Palace, however, refused to lie down and continued to apply pressure on a fragile looking Arsenal defense. If they possessed a striker the caliber of Giroud then they would have surely won the game.
Arteta then went from hero to villain when he received his marching orders for a foul on Chamakh. The decision was harsh to say the least as there was no intention in the foul.
Palace failed to take advantage of their numerical superiority and the Gunners scored a late goal through Giroud. The Frenchman did little throughout, but popped up when his team needed him most.
In the end one could see the relief on Arsene Wenger's face as the Frenchman knew his team had just got out of jail to move five points clear at the top of the Premier League.
Here, Bleacher Report looks at six things we learned from Crystal Palace vs. Arsenal...