Lemony Cucumber Salad

1 cup thinly sliced radishes
1/2 cup finely chopped orange bell pepper
1/4 cup chopped fresh flat-leaf parsley
2 English cucumbers, thinly sliced (about 6 cups)
1 teaspoon finely grated lemon rind
2 tablespoons fresh lemon juice
1 tablespoon extra-virgin olive oil
1 1/2 teaspoons white wine vinegar
1/2 teaspoon salt
1/4 teaspoon freshly ground black pepper

Combine first 4 ingredients in a large bowl.
Combine lemon rind and remaining ingredients in a small bowl, stirring with a whisk. Pour over cucumber mixture; toss well to coat. Serve at room temperature or chilled.