2008 NFC Championship Game Eagles/Cardinals?

I was just watching the replay of this game and i am a eagles fan and i saw that the eagles came back. So Mc.Nabb was throwing it to Kevin Curtis and the Arizona guy tripped him but they said no p interference but that made me mad because i think it was the eagles would have made it to the super bowl if the called that but they didn't so what do you think about the call was it a penalty? Please help!