In a medium saucepan, combine the garlic broth, salt, and pepper. Bring to a boil. Stir in the pasta and boil for 6 minutes.
Stir in the broccoli di rape and return to a boil. Lower the heat and simmer until the broccoli di rape is tender, about 4 minutes. Remove from the heat and stir in the lemon juice to taste. Check the seasoning and add salt and pepper, if necessary.