Barcelona won the game 3-0 thanks to three second half goals from Luiz Suarez, Lionel Messi (penalty) and Aleix Vidal.
While Modric and Rakitic played for 90 minutes, Kovacic was replaced by Gareth Bale on 72 minutes.
The Eagles and Croatia will also face Argentina and debutantes Iceland in Group D at the World Cup.
Reacting to a question posed by Completesportsnigeria.com about the performance of the three Croatian stars, Ogu said he believes the Eagles have capable midfield players who can match them.
The Hapoel Beer-Sheva midfielder added when asked if he was not bothered by Argentina superstar Messi, Ogu replied: “Hahahahaha I no dey fear any player for this life!!”