The "Xbox Games" forum, which includes Retro Game Reviews, has been archived and is now read-only. You cannot post here or create a new thread or review on this forum.
Try to get past each lazer, one at a time and use the quicksave feature after each if you must.
If jumping and ducking doesn't work, try your grenade launcher, it might shift them. I can't remember.
I have to admit, I think I done that section first time, although you may be doing it on a high difficulty setting.
There is another Lazer part in a lift later on, only at that part you can shoot the sides of the lazers. Hope my info helped.