Far right activist prosecuted Jamal Hijazik, who was attacked in the playground at Almondbury Community School in Huddersfield, West Yorkshire in October 2018.
Shortly after video of the incident went viral, Mr Robinson claimed in two Facebook videos that Jamal “was not innocent and used to violently attack young English girls at his school”.
In the clip, viewed by nearly a million people, the 38-year-old also claimed that Jamal “beat a girl black and blue” and “threatened to stab” another boy at his school, the teenager denies. did.
At a four-day trial in April, Jamal’s lawyers said Mr Robinson’s comments had a “devastating effect” on the schoolboy and his family, who had come to the UK as a refugee from Homs, Syria.
Mr Robinson, whose real name is Stephen Yaxley-Lennon and who represented himself, argued that his remarks were largely true, referring to the “disclosure of dozens of accounts of aggressive, abusive and deceitful behavior” by 18-year-old Jamal. was claimed.
However, in a ruling delivered on Thursday, Mr Justice Niklin ruled in favor of Jamal and awarded him £100,000 in damages.
Katrin Evans QC for Jamal had previously said that Mr Robinson’s comments had “faced death threats and extremist agitation” and that she should receive between £150,000 and £190,000 in damages.
During the trial, Ms Evans described Mr Robinson as “a well-known ultra-right advocate” with an “anti-Muslim agenda” who used social media to spread his views.
He said Mr Robinson’s video “turned Jamal into an attacker and bully into a righteous white knight”.
However, Mr Robinson said he was a freelance journalist during the trial, telling the court: “The media had just zero interest in the other side of this story, the uncomfortable truth.”
A hearing will take place after Thursday’s verdict to consider the outcome of the verdict.
Jamal Hijazi’s lawyer, Francesca Flood, said: “It took our client, Jamal Hijazi a lot of courage to pursue his defamation action against such a prominent far-right and anti-Islam activist as Stephen Yaxley-Lennon. There was necessity, better known as Tommy Robinson.
“We are glad that Jamal has been fully justified.
“Jamal and his family now want to put the matter behind them so that they can move on with their lives.
“However, they wish to express their gratitude to the great British public for their support and generosity, without which this legal action would not have been possible.”
Reporting by the Press Association