Set a colander over a medium mixing bowl. Grate the cucumber into the colander. Press with a back of a spoon to express all of the water from the cucumber. You can also place grated cucumber into a cheesecloth and squeeze the water out.
In a medium mixing bowl, mix together Greek yogurt, garlic powder, cucumber and dill. Cover and chill while you prepare the wraps.
!to make the wraps:
Prepare the burgers according to the manufacturers instructions on the package.
Let cool slightly. Slice in half.
Warm up tortillas in a microwave.
Place one tortilla on a plate.
Top with one lettuce leaf.
Top with two slices of the burgers.
Top with 2 tablespoons of the tzatziki sauce.
Wrap the tortilla. Slice in half and serve immediately.
Refrigerate any leftovers of the wraps as well as the sauce.