Slice cucumber about 1/2 a centimetre thick into rounds.
In a bowl, mix the greek yogurt and cream cheese. Add the zest and juice of the lemon. Add the salt and pepper. Mix well.
With a teaspoon, dollop the mixture onto the cucumber slices.
Tear the smoked salmon into small pieces and place on top of the yogurt mix. Sprinkle a pinch of salt and pepper from a height.
Garnish with fresh dill.