At this point you have a couple of options to consider as you don't want to overcook your veggies while frying the rice.
If you are using a wok, you can move the vegetables up one side of the wok (less heat there), and add a bit more oil to the empty side to fry the rice in. However, if you are using a regular pan, it's best to remove everything from the pan to a dish to be mixed back into the rice later.
Once you have added about half a tablespoon of oil, toss the rice around until fully heated through.
After the rice is cooked to your liking (either heated through, or so hot that the grains are dancing on the pan), go ahead and mix your veggies together with the rice.