Despite exceeding their quarterly top and bottom line expectations on Thursday, Nike (NKE)  and Lululemon (LULU)  shares fell in today’s trading session due to softer-than-expected guidance.Still, investors may be wondering if it’s time to buy the dip in these prominent retailers with Nike’s stock now down -13% year to date while Lululemon shares have fallen -20%.Image Source: Zacks Investment ResearchFavorable Quarterly ResultsReporting its fiscal third quarter results yesterday, Nike posted earnings of $0 ...