Despite fielding a star-studded squad, the European champions failed to break down the disciplined African outfit in their Group H opener.
The Manchester City midfielder claimed the opposition showed little desire to play attacking football, instead remaining deep inside their own half throughout the contest.
Speaking to La 1 after the final whistle, Rodri voiced clear frustration with the newcomers' cautious tactical setup.
"It wasn’t meant to be. There’s little to complain about," Rodri said.
"We knew it was a game that required patience. They sat back, and they dropped back very quickly. We couldn’t put it in.
"We created chances but couldn’t finish. The positive thing is that they barely created anything against us. We need to improve our finishing.
"That’s how they play. They don’t get past midfield. It’s a matter of improving our finishing."
The Spaniards would be hoping to get their first victory when they take on Saudi Arabia in their next match on June 21st.