Prepare all vegetables: Slice cucumbers into 1/4-inch rounds. Cut tomatoes into wedges about 1-inch thick. Thinly slice red onion. Chop parsley and dill.
Make the dressing: In a small bowl, whisk together olive oil, red wine vinegar, minced garlic, salt, and pepper until well combined.
Combine ingredients: In a large mixing bowl, add cucumbers, tomatoes, red onion, parsley, and dill. Pour dressing over vegetables.
Toss gently: Using salad tongs or two large spoons, gently toss everything together until vegetables are evenly coated with dressing.
Let it rest: Allow salad to sit at room temperature for 10 minutes to let flavors meld. If using feta, sprinkle it over the top just before serving.
Serve immediately: Transfer to a serving bowl or individual plates. Taste and adjust seasoning with additional salt or pepper if needed.
