In a small bowl, combine Greek yogurt, olive oil, lemon juice, grated garlic, salt, and pepper. Mix until smooth and creamy, then set aside.

Slice cucumbers in half lengthwise and cut into thin half-moon slices.

Finely slice the red onion.

In a large serving bowl, combine cucumber slices, red onion, and chopped dill.

Pour the creamy dressing over the salad mixture and toss everything together until well combined.

Serve immediately or chill in the fridge for a bit before serving.