يهرب صديقي من غرفة الهروب.

A word-by-word breakdown is:

• يهرب = he escapes / he runs away
• صديقي = my friend
• من = from
• غرفة الهروب = the escape room
  literally: the room of escape / the escape room

So the structure is roughly:

escapes my-friend from the-escape-room

which in natural English becomes My friend escapes from the escape room.

Because Arabic often uses verb–subject–object/prepositional phrase order, especially in Modern Standard Arabic.

So:

• يهرب صديقي... = literally escapes my friend...

This is a very normal Arabic sentence pattern.

Arabic can also use subject–verb order:

• صديقي يهرب من غرفة الهروب

That is also correct, but it can sound a bit more focused on my friend as the topic. In neutral written MSA, starting with the verb is very common.

The verb يهرب is the present-tense form of the root related to هرب (to escape / flee).

In this form:

• يـ at the beginning often marks he in the present tense
• so يهرب = he escapes / he is escaping

Because the subject is صديقي (my friend), which is singular and masculine, يهرب matches it.

In Arabic, the present tense can cover several meanings depending on context.

So يهرب can mean:

• he escapes
• he is escaping
• sometimes even he will escape, if the context suggests the future

If you want to make the future especially clear, Arabic often adds سـ or سوف:

• سيهرب = he will escape
• سوف يهرب = he will escape

Without extra context, يهرب is usually understood as present/simple present.

Because صديقي means my friend.

It is made of:

• صديق = friend
• ـي = my

So:

• صديق = a friend / friend
• صديقي = my friend

That final ـي is a possessive suffix.

Arabic usually attaches short possessive endings directly to nouns.

For example:

• صديقي = my friend
• صديقك = your friend (to a male)
• صديقه = his friend

So instead of saying my + friend as two separate words, Arabic often combines them into one word.

This is an iḍāfa construction, often called a genitive construction or noun-noun construction.

It is made of:

• غرفة = room
• الهروب = the escape / escaping

Together:

• غرفة الهروب = the room of escape
• in natural English: the escape room

Important iḍāfa rules here:

1. The first noun (غرفة) does not take الـ
2. The second noun (الهروب) can be definite with الـ
3. If the second noun is definite, the whole phrase becomes definite

So غرفة الهروب means the escape room, not just an escape room.

Because in an iḍāfa phrase, definiteness is usually controlled by the second noun.

Compare:

• غرفة هروب = a room of escape / an escape room
• غرفة الهروب = the escape room

By adding الـ to الهروب, the whole phrase becomes definite.

Also, الهروب here is a verbal noun, meaning something like escape or escaping.

من means from.

The verb هرب / يهرب is commonly used with من to show what someone escapes from:

• هرب من البيت = he escaped from the house
• يهرب من الشرطة = he is escaping from the police
• يهرب من غرفة الهروب = he escapes from the escape room

So من is exactly the preposition you would expect here.

Because صديقي already means my friend, and possessive nouns in Arabic are automatically definite.

So:

• صديق = a friend / friend
• صديقي = my friend

You do not say الصديقي here. The possessive ending already makes it definite.

Yes. In fully vocalized formal Arabic, you could write it approximately as:

• يَهْرُبُ صَديقِي مِنْ غُرْفَةِ الهُرُوبِ

The important case points are:

• صديقي is the subject, so it is nominative in meaning
• after من, the noun becomes genitive:
  • غرفةِ
• in the iḍāfa, the second noun is also genitive:
  • الهروبِ

In normal everyday writing, these short case endings are usually not written.

A careful MSA-style pronunciation would be close to:

yah-rub ṣa-dee-qee min ghur-fa-ti l-hu-roob

A more precise breakdown:

• يهرب = yah-rub
• صديقي = ṣa-dee-qee
• من = min
• غرفة = ghur-fah or ghur-fa-ti in full case pronunciation
• الهروب = al-hu-roob or, in connected speech after غرفة, often closer to ghurfat al-huroob

Exact pronunciation varies a little depending on how formal the reading is.

Yes. That is also correct.

Compare:

• يهرب صديقي من غرفة الهروب
  more classically verbal in style
• صديقي يهرب من غرفة الهروب
  more clearly starts with my friend as the topic

Both are grammatical in MSA. The first one is especially typical of formal written Arabic narrative style.

Yes, it is understandable and works well in Modern Standard Arabic.

It is a fairly direct way to express escape room using Arabic structure:

• غرفة = room
• الهروب = escape

So غرفة الهروب literally means room of escape, which naturally corresponds to escape room.

Depending on context, native speakers might also use borrowed or slightly different expressions, but غرفة الهروب is a clear and solid MSA phrase.