my first reaction would be to try and wax the area. but since you said it is quite deep there is only one way to make the are somewhat blend in with the rest of the panel;
touch-up paint (go for the dealer/factory ones)
fine (1500 grit) sandpaper
paint polish
wash area thoroughly
apply thin coats of touch up paint; less is better keep applying until the void is filled
mask off the area
sand just the area touched up and a little of the surounding
polish to restore shine
ofcourse if you haven't done anything like tihs before it would be a super duper idea to try on something else first or somewhere inconspicous
touch-up paint (go for the dealer/factory ones)
fine (1500 grit) sandpaper
paint polish
wash area thoroughly
apply thin coats of touch up paint; less is better keep applying until the void is filled
mask off the area
sand just the area touched up and a little of the surounding
polish to restore shine
ofcourse if you haven't done anything like tihs before it would be a super duper idea to try on something else first or somewhere inconspicous