Following the attack, External Affairs Minister Sushma Swaraj said that she has sought a report on the matter.
"I have asked for a report on the attack on German national in Delhi. I have asked Delhi Government to provide him best medical treatment," she tweeted.
According to the police, the incident took place at around 10.26 PM yesterday near the Geeta Colony flyover.
The victim, Benjamin Janis Schult, had taken a cycle rickshaw from outside Chandni Chowk metro station to go to a bus stand for boarding an Amritsar-bound bus.
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"He told the tourist that he is his friend. They kept on roaming around and when the tourist asked him where he was taking him, the rickshaw-puller replied in English saying, 'I am taking you to the right place'," a police officer said.
They took the German national to a secluded spot beneath the Geeta Colony flyover where they attacked and robbed him.
"The two attacked him with surgical blades. He suffered injuries to his face and elbow. They snatched away his wallet containing around Rs 9,000 and his cellphone," said the officer.
He climbed the flyover and stopped and boarded a passing car.
They met a police team on the way which rushed to the spot of the attack but found that the accused had fled.
DCP (North) Jatin Narwal said that the rickshaw has been seized and they are on the lookout for the accused, one of whom has been identified.
Police are also scanning the CCTV footage from outside Chandni Chowk metro station.
Police said Schult is in India on a tourist visa. He has been visiting various places since last month and is staying at a guest house in Laxmi Nagar area here.