Oman also welcomed the truce, urging all parties to abide by its terms and avoid any actions that could undermine it.
The foreign ministry expressed appreciation for efforts by the US to secure the agreement.
Earlier on Thursday, Trump announced that Israel and Lebanon would begin a 10-day ceasefire at midnight local time in Beirut and Tel Aviv (2100GMT).
“I just had excellent conversations with the highly respected President Joseph Aoun, of Lebanon, and Prime Minister Bibi Netanyahu, of Israel,” Trump said on his Truth Social platform, referring to Israeli Prime Minister Benjamin Netanyahu by his nickname.
“These two leaders have agreed that in order to achieve peace between their countries, they will formally begin a 10-day ceasefire at 5 PM EST,” he added.
The announcement followed US-mediated talks between Lebanese and Israeli delegations that took place on Tuesday at the State Department in Washington, DC.
The US and Israel began attacks on Iran on February 28, prompting retaliation from Tehran against Israel and US allies in the Gulf, and from Hezbollah in Lebanon. Israel then began striking Hezbollah, killing over 2,000 people and displacing 1 million over the last six weeks.
A ceasefire between the US and Iran was also reached last week, and efforts to end the war permanently are under way.