Step 1: Soak the cedar plank in water for at least 1 hour (or up to 4 hours) to prevent burning.
Step 2: Preheat grill to medium-high heat (about 400°F/200°C).
Step 3: Pat salmon dry with paper towels and place skin-side down on the soaked cedar plank.
Step 4: In a small bowl, mix olive oil, minced garlic, dill, parsley, salt, pepper, and smoked paprika.
Step 5: Brush the herb mixture evenly over the top of the salmon fillet.
Step 6: Arrange lemon slices on top of the salmon.
Step 7: Place the cedar plank with salmon directly on the grill grates.
Step 8: Close the grill lid and cook for 15-20 minutes, or until salmon flakes easily with a fork.
Step 9: Carefully remove the plank from the grill using oven mitts.
Step 10: Let rest for 5 minutes before serving.