Boil salted water in a large pot.
Cook bucatini until al dente.
Drain pasta and set aside.
Heat oil in skillet over medium heat.
Sear steak slices until browned.
Remove steak and set aside.
Add shrimp to skillet and cook pink.
Remove shrimp and set aside.
Add garlic and chili paste to skillet.
Stir for one minute until fragrant.
Add cherry tomatoes and cook until softened.
Stir in heavy cream and simmer sauce.
Return steak and shrimp into sauce.
Add bucatini pasta into skillet.
Toss pasta with sauce until coated.
Add Parmesan and lemon juice.
Season with salt and black pepper.
Garnish with parsley before serving.