Cardio and strength training can have a negative impact on each other, but only if they are combined in an unbalanced manner that contradicts the actual training goal.
When half of a bodybuilder’s workouts consist of excessive cardio training, he or she will not achieve optimal training results.

Similarly, a marathon runner will not improve his or her running performance by lifting heavy weights every day in the gym.

Endurance training does not result in muscle loss as long as you provide your body with enough high-quality protein, complex carbohydrates, and essential fats and allow your muscles to recover.
In fact, the opposite is true.
Cardio workouts on a regular basis can actually help you build muscle:

• The cardiovascular system functions better and more efficiently, with increased capillary growth in the muscles.
  This improves the blood flow of the muscles.
• Oxygen and nutrients are transported faster, and metabolic wastes are eliminated faster.
• It increases your stamina and shortens your recovery time.
  This allows you to exercise more frequently and at a higher intensity.
• It can help reduce your body fat percentage.