The meeting of leaders from 20 top economies, which was to discuss inclusive economic growth and climate change, will adopt a resolution at the end of the two-day meeting tomorrow calling for better coordination and exchange of information to cut off funding and a more comprehensive approach on "addressing the conditions conducive to terrorism."
The resolution on terror would be separate from the main Summit declaration, officials said.
"We are united in condemning the barbaric attacks in Paris this week and the recent bombings in Ankara and Lebanon. We share the sorrow of Russia for the lost lives in the fallen aircraft in Sinai," he said. "These alone are a stark reminder of the dark force we face -- larger than specific groups and particular targets and territories."
"It is a major global challenge of our times. It not only takes a tragic toll of lives, it also extracts a huge economic cost and threatens our way of life. It calls for a comprehensive global response. Combating it must be major priority for G20," Modi said.
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"The need for a united global effort to combat terrorism has never been more urgent. This must also be a priority for BRICS nations."
The declaration after the G20 talks may seek quicker implementation of the Financial Action Task Force recommendations that seek to stop individuals sending money to groups like ISIS and tackle the black market for oil that is seen as being key to their funding.
It also plans to prevent terrorists from exploiting technology, communications and resources to incite terrorist acts, including through the Internet.