Wash and dry the cucumbers. Slice them thinly, about ⅛ inch thick, and place them in a large mixing bowl.

Peel and thinly slice the red onion, adding it to the bowl. Toss gently to combine.

Chop the fresh dill and parsley; sprinkle over cucumber and onion mixture. Mix gently to distribute herbs.

Crumble feta cheese over the salad mixture. Fold it in carefully to preserve texture.

In a small bowl, combine olive oil and lemon juice. Add salt and pepper to taste, then whisk until well-blended.

Drizzle dressing over the salad and toss gently to coat without making cucumbers soggy.

Let the salad rest for 10 to 15 minutes at room temperature to allow flavors to meld.