Bring chicken broth to a boil and add the rice.
Stir for about 2 minutes, then reduce the heat and simmer for 5-10 minutes, or until the rice is tender.
Remove about 100ml of the broth and set aside to cool.
Whisk the eggs.
While continuing to whisk, slowly drizzle in the cooled broth, then add the lemon juice.
Whisk again.
Remove the soup from the heat and gradually add the egg mixture, stirring constantly for about 1 minute.
Season to taste with salt and pepper.
Garnish with fresh herbs if desired and serve immediately.