Cook the pasta according to the directions on the package, adding a generous tablespoon or so of kosher salt to the water as it cooks. Just before the noodles are done cooking, add the broccoli to the pot. Let the broccoli boil for about 30 seconds and then drain everything into a large colander. Rinse well with cold water.
Place the drained pasta, broccoli, cucumber, bell peppers, onion, tomatoes, and marinade liquid in a large bowl. Toss well to coat thoroughly. Sprinkle with salt and pepper, stir again and taste. Adjust seasonings as needed. Cover and refrigerate until ready to eat. Stir again before serving. Enjoy!