Several countries have expressed support for Saudi Arabia, including Egypt and Russian Federation, which both told Ottawa it was unacceptable to lecture the kingdom on human rights.
The first official Russian comment on the Saudi-Canadian dispute came from the Russian Foreign Ministry, which confirmed Moscow's refusal to politicize human rights issues, noting that Saudi Arabia has the right to determine the course of its own internal reforms.
Diplomatic channels and trade negotiations were suspended last week, and some flights from Saudi Arabia to Canada halted.
On Tuesday, Reuters reported that Canada plans to seek help from United Arab Emirates and Britain to defuse the row, citing sources familiar with the matter.
The Canadian dollar was down by 0.2% against the USA dollar to 1.3096 at 8:59 a.m. ET.
However, Saudi Arabia's Foreign Ministry called Canada's plea a "grave and unacceptable violation of the kingdom's laws and procedures". Dr. Al-Eissa said in a tweet, "I would like to reassure our students in Canada that your government is keen on your academic future".
Saudi cuts oil pricing as it boosts supply
Even with last week's rise, overall USA crude inventories are below the 5-year average of around 420 million barrels. Saudi Arabia's production increased by 230,000 barrels a day in July to 10.65 million barrels per day.
Inflows slowed in recent years mainly due to low oil prices, but regional turmoil doesn't help, critics of the government say.
"Crucifixions" in Saudi Arabia typically involve beheading the condemned, then sewing their head back on and putting their body on public display - hanging them from a pole or a cross, according to Amnesty International.
The kingdom has taken several measures to punish Ottawa. All Saudi patients in the country will be transferred to hospitals outside of Canada.
Saudi scholarship recipients to Canadian universities were ordered to other countries.
Meanwhile, Saudi Arabia's main state wheat-buying agency, Saudi Grains Organization (SAGO), issued a notice to exporters that it will no longer buy Canadian wheat and barley.
Canada's Prime Minister Justin Trudeau is expected to hold a news conference in Montreal.
The dispute may hurt what is a modest bilateral trade worth almost $4 billion a year. Saudi Arabia has invested about $6 billion in Canadian businesses since 2006, data compiled by Bloomberg show.