OK this is what you do.
1. Get you ranged people with 64mtr range stand on the bridge before you start attacking Kimaru (

)
2. Have them stand on the first ridge on the bridge. (The bridge is made up a series of tile like things, put the riflemen inbetween the first and second one. Not the ridge closest to the exit door, the ridge closest to where you do the fighting.)
3. Tell them not to move.
4. The Jedi or whoever you want starts attacking & tanking Kimaru while she does her fire circles and storms.
When the ranged people are standing on the ridge the fire circles will not touch them. The storms (purple clouds) might get you but they don't mind much if you have a medic healing your ranged peeps.
Have fun
PS. While you're doing your 3 instances for the night why not check out how to make a section of IG-88 easier
http://www.taultunleashed.com/phpbb2/about56400_Easy_IG_.html
@Kingkong: We had 2 ranged people trying this out the other day and they never came close to dying, the clouds while still can get them, it's a very small chance to be hit while you're on there.
PIC:
stand where the circle is
![(!empty($user->lang['IMAGE'])) ? $user->lang['IMAGE'] : ucwords(strtolower(str_replace('_', ' ', 'IMAGE')))](http://i270.photobucket.com/albums/jj103/leethax24/screenShot0087.jpg)