In a large bowl, combine the sliced cucumbers, grated carrots, red onion, and parsley.

In a separate small bowl, whisk together the olive oil, apple cider vinegar, lemon juice, garlic powder, salt, and pepper until well combined.

Pour the dressing over the vegetable mixture and toss gently to coat all the ingredients evenly.

Let the salad sit for at least 15 minutes to allow the flavors to meld.

Serve chilled or at room temperature.