Find various locations in your yard where you may be able to install your portable fire pit. These areas should be away from tall grass and other trees and plants, and the spot you choose cannot be on a hill or slant.
Check to make sure the spot you choose for your portable fire put is not slanted. Use a level and dig out some of the area if it's slanted. This will help protect the surrounding lawn from possible problems with the portable fire pit.
Hire a certified professional to install a gas portable fire pit. These can be hazardous to your lawn and your family's safety if they are not installed correctly.
Add plenty of stones, rocks or bricks around your portable fire pit. This will build up an area around the fire pit that helps to further separate it from your lawn.
Bring a hose near your portable fire put whenever you use it. If any sparks should ignite an area of your grass, you can protect it immediately by using your hose to extinguish the fire.