Nayara Energy, an Indian refiner part-owned by Russia's Rosneft and newly sanctioned by the European Union, has revised payment terms to sell a spot naphtha cargo in a tender issued on Monday, according to a document seen by Reuters.

As the EU tightens sanctions on Russian oil and fuels, India’s energy security, refinery margins, and $15bn exports to EU stand exposed to geopolitical crossfire

The sanctions would mean that Nayara Energy would not be able to export petroleum fuels and products to Europe, and potentially hit any of its dealings with European companies.