Beckham signed a five-month contract with PSG in January.
Speaking about the 37-year-old former Manchester United, Real Madrid and AC Milan midfielder ahead of Wednesday's second leg, Ibrahimovic told CNN: "I think it's good for me that Beckham came so he gets more attention than me, so they leave me a little bit alone.
"When I came here, everybody said 'don't worry, as a football player you can walk in the city and nobody will disturb you. Because as a football player here, it is not like it is in Italy'.
"But since the day, I came here it's been totally stressful. Everybody is chasing me with their scooters; I don't even walk in the streets.
"When David came, he got more of the media attraction, so that's good because he takes care of that and I can play football, focus on football."