Chop the shrimp into small pieces and set aside.
Add the mayonnaise, hot sauce, celery, green onion, parsley, and lemon juice to a bowl. Stir to combine.
Add the spices to the dressing and stir to combine.
Add the shrimp to the dressing and stir to combine.
Taste and adjust the seasonings to your liking.
To fill the phyllo cups, use a measuring spoon to mound 1 heaping teaspoon of filling into each cup.
Arrange the cups on a serving platter and sprinkle with the green onions.
To garnish, add sliced lemon and few whole shrimp, if desired.