Above the widely condemned picture, released on Telegram by a pro-ISIS group, came with a chilling caption which warns 'the ground will be filled with your blood'.
The group is reportedly losing territory in Syria and Iraq, but have ramped up their violence as they want to show the world they are still strong.
Super Eagles midfielder Wilfred Ndidi says he hopes Nigeria wins their first two World Cup Group D matches against Croatia and Iceland before a final group against Argentina.
Your blood will fill the ground: ISIS threatens Lionel Messi and Cristiano Ronaldo ahead of FIFA World Cup
With the FIFA World Cup getting ever closer, along with the FIFA 18 World Cup mode coming just as fast, EA Sports has released the FIFA 18 World Cup ratings for various teams, such as Germany, France, and Argentina, which shows which team might have the best chance of winning the World Cup.
The doctored posters must be a cause for concern among the fans and organisers of the world cup and should alert the security personnel. "Victory will be ours". Earlier this year they posted a picture of him mocked up in an orange jumpsuit similar to those worn by detainees in Guantanamo Bay and other hostages that have been beheaded by ISIS on camera. Luzhniki Stadium in Moscow will host the final on July 15.
However, this is the first time Portugal and Real forward Ronaldo has been mentioned by the Islamic State in its ever-increasing threats in the lead up to the quadrennial football showpiece in Russian Federation, starting June 14.
Only in April this year St Petersburg was subject to an terrible terrorist attack that ISIS claimed, when a briefcase bomb exploded on the metro, killing 14.