Aid groups warn any invasion would add to already-catastrophic conditions for Gaza's 2.4 million people
"The national team captain... has an infection in his right foot and is undergoing treatment with antibiotics," the Portuguese FA said in a statement.
Ronaldo, 35, was restricted to a gym session on Wednesday.
Lille midfielder Renato Sanches has been ruled out of his country's first two Nations League games with an undisclosed injury.
European champions Portugal won the inaugural Nations League last year, beating the Netherlands 1-0 in the final in Porto.
They begin the new campaign at home to Croatia on Saturday before travelling to Sweden three days later.
Aid groups warn any invasion would add to already-catastrophic conditions for Gaza's 2.4 million people
The American they will face Australia and Serbia on July 15 and July 17 as part of their preparation for the Paris Olympic Games
The leaders emphasise that the deal to release the hostages would bring an immediate and prolonged ceasefire in Gaza
Dubai-based Sumit Augustine has had a philosophical approach towards spending
The regional upswing also defies oil production cutbacks
It's a treatise that would determine the course of your life, not just academically, but as a person too
A US-based company is developing an eVTOL aircraft for commercial passenger service and is expected to start operations by 2025 or early 2026
The project’s aim is to generate funds for Harmony House, an orphanage located in India's Gurgaon