NAYPYITAW, MYANMAR (AFP, REUTERS) - Pope Francis will hold talks with Myanmar leader Aung San Suu Kyi on Tuesday (Nov 28), a key moment of a tour aimed at soothing religious and ethnic hatreds that have driven huge numbers of Muslim Rohingya from the country.

The keenly-watched meet in Naypyitaw comes as Ms Suu Kyi, a Nobel Peace Prize winner, has been frozen out by a global rights community that once adored her, outraged at her tepid reaction to plight of the Rohingya.

After the talks, the pontiff will address Ms Suu Kyi and diplomats in the capital - his first opportunity to speak on a conflict that looms over his trip.

Earlier on Tuesday, Pope Francis met leaders of several faiths in majority-Buddhist Myanmar, stressing the importance of "unity in diversity" but making no mention the Muslim Rohingya.

"Unity is always a product of diversity," he told leaders of the Buddhist, Islamic, Hindu, Jewish and Christian faiths in Yangon, according to Vatican officials who gave a briefing on the 40-minute meeting.

"Everyone has their values, their riches as well as their differences, as each religion has its riches, its traditions, its riches to share. And this can only happen if we live in peace, and peace is constructed in a chorus of differences."

The 80-year-old late on Monday received a "courtesy visit" from the powerful army chief General Min Aung Hlaing - whose troops the UN and US believe have carried out a campaign of ethnic cleansing against the Rohingya in Rakhine state.

Gen Min Aung Hlaing has firmly denied allegations of widespread brutality by his forces, despite the flight of 620,000 Rohingya to Bangladesh since August.

His office said he told the pope there was "no discrimination" in Myanmar, vaunting his military for keeping "the peace and stability of the country".

The pope has repeatedly spoken out from afar about the crisis, standing up for his Rohingya "brothers and sisters".

A similar embrace in Myanmar is fraught with danger - using the term "Rohingya" is unacceptable in a country where the Muslim minority are denied citizenship and branded illegal "Bengali" immigrants.

The country is listening closely to see if Pope Francis will name the Rohingya on Myanmar soil and risk provoking the outrage of Buddhist nationalists.

Ms Suu Kyi came to power after elections in 2015 but has fallen from grace internationally for not doing more to stand up to the army in defence of the Rohingya - whose name she will not publicly say.

So far, the pontiff has received a warm welcome to the majority Buddhist nation.

Myanmar's Catholic community numbers just over one per cent of the country's 51 million people.

But some 200,000 Catholics are pouring into the commercial capital Yangon from all corners of the country ahead of a huge, open-air mass on Wednesday.

Mr Zaw Sai, 52, from Kachin state found space for him and his family to camp out in a church ground.

"We feel very pleased because we are from different ethnicities but are one in our religion," he said.

Just days before the papal visit, Myanmar and Bangladesh signed a deal to start repatriating Rohingya refugees within two months.

But details of the agreement - including the use of temporary shelters for returnees, many of whose homes have been burned to the ground - raise questions for Rohingya fearful of returning without guarantees of basic rights.

Pope Francis will travel on to Bangladesh on Thursday.